Amazon Redshift will no longer support the creation of new Python UDFs starting Patch 198. Existing Python UDFs will continue to function until June 30, 2026. For more information, see the [ blog post ](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/). 

# Document history
Update Amazon Redshift managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Added new `AmazonRedshiftFederatedAuthorization` managed policy.Update Amazon Redshift managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permission `lakeformation:GetDataAccess`.Update Amazon Redshift managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permissions `glue:GetCatalog` and `glue:GetCatalogs`.Update Amazon Redshift managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Update to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permission `servicequotas:GetServiceQuota` to access AWS quotas or limits.Update query editor v2 managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftQueryEditorV2FullAccess`, `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permissions `redshift-serverless:ListNamespaces` and `redshift-serverless:ListWorkgroups`.Update Amazon Redshift read-only access managed policy[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftReadOnlyAccess` managed policy with permission `redshift:ListRecommendations` to list Amazon Redshift Advisor recommendations.Update Amazon Redshift managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permissions `ec2:AssignIpv6Addresses` and `ec2:UnassignIpv6Addresses`.Update query editor v2 managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permissions `sqlworkbench:GetAutocompletionMetadata` and `sqlworkbench:GetAutocompletionResource`.Update Amazon Redshift managed policy[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy to grant permissions on AWS Secrets Manager to create and manage admin credential secrets.Update Amazon Redshift managed policy[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy to remove permissions for ec2 network-related actions. These were specifically associated with the *Purpose:RedshiftMigrateToVpc* resource tag.Update Amazon Redshift Data API managed policy[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftDataFullAccess` managed policy with permission `redshift:GetClusterCredentialsWithIAM`.Update query editor v2 managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permission `sqlworkbench:GetSchemaInference`.Update query editor v2 managed policies[https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates)

Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permission `sqlworkbench:AssociateNotebookWithTab`.Support for authentication profiles with Amazon Redshift drivers[https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-with-authentication-profiles.html](https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-with-authentication-profiles.html)

You can now connect to Amazon Redshift with an authentication profile. Support for cross-VPC endpoints for Amazon Redshift powered by AWS PrivateLink[https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-cross-vpc.html](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-cross-vpc.html)

You can now use Redshift-managed VPC endpoints with Amazon Redshift. Support for Amazon Redshift query editor enhancements[https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html)

You can now use the query editor with enhanced VPC routing, longer query run times, and more cluster node types. Support for ra3.xlplus node types[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html)

You can now create ra3.xlplus node types. Support for the console integration with partners[https://docs.aws.amazon.com/redshift/latest/mgmt/partner-integration.html](https://docs.aws.amazon.com/redshift/latest/mgmt/partner-integration.html)

You can integrate with partners using the Amazon Redshift console. Support for the ability to move clusters between Availability Zones[https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-recovery.html](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-recovery.html)

You can now move RA3 clusters between Availability Zones. Support for JDBC driver version 2.0[https://docs.aws.amazon.com/redshift/latest/mgmt/jdbc20-install.html](https://docs.aws.amazon.com/redshift/latest/mgmt/jdbc20-install.html)

You can now configure the JDBC driver version 2.0. Support for Lambda UDFs and tokenization[https://docs.aws.amazon.com/redshift/latest/mgmt/data-tokenization.html](https://docs.aws.amazon.com/redshift/latest/mgmt/data-tokenization.html)

You can now can write Lambda UDFs to enable external tokenization of data. Support to schedule the run of an SQL statement[https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor-schedule-query.html](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor-schedule-query.html)

You can now schedule a query on the Amazon Redshift console. Support for the Data API for Amazon Redshift[https://docs.aws.amazon.com/redshift/latest/mgmt/data-api.html](https://docs.aws.amazon.com/redshift/latest/mgmt/data-api.html)

Amazon Redshift can now be accessed using the built-in Data API. Documentation updates include an *Amazon Redshift Data API Reference*. Support for Amazon Redshift console query monitoring[https://docs.aws.amazon.com/redshift/latest/mgmt/performance-metrics-console.html](https://docs.aws.amazon.com/redshift/latest/mgmt/performance-metrics-console.html)

Updated the guide to describe new query monitoring graphs. Support for usage limits[https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-usage-limits.html](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-usage-limits.html)

Updated the guide to describe usage limits. Multi-factor authentication[https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html](https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html)

Updated the guide to describe multi-factor authentication support. Elastic resize now supports node type changes[https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html)

Updated elastic resize description. Support for ra3.4xlarge node types with managed storage[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html)

Updated the guide to include ra3.4xlarge node types. Support for pause and resume[https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-operations.html#rs-mgmt-pause-resume-cluster](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-operations.html#rs-mgmt-pause-resume-cluster)

Updated the guide to describe the pause and resume cluster operations. Support for Microsoft Azure AD as an identity provider[https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html#setup-azure-ad-identity-provider](https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html#setup-azure-ad-identity-provider)

Updated the guide to describe the steps to use Microsoft Azure AD as an identity provider. Support for the RA3 node type[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html)

Updated the guide to describe the new RA3 node type. Support for the new console[https://docs.aws.amazon.com/redshift/latest/mgmt/welcome.html](https://docs.aws.amazon.com/redshift/latest/mgmt/welcome.html)

Updated the guide to describe the new Amazon Redshift console. Security information updates[http://docs.aws.amazon.com/redshift/latest/mgmt/iam-redshift-user-mgmt.html](http://docs.aws.amazon.com/redshift/latest/mgmt/iam-redshift-user-mgmt.html)

Updates to the security information documentation.Snapshot enhancements[http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html](http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html)

Amazon Redshift now supports several enhancements to managing and scheduling snapshots.Concurrency scaling[http://docs.aws.amazon.com/redshift/latest/mgmt/workload-mgmt-config.html](http://docs.aws.amazon.com/redshift/latest/mgmt/workload-mgmt-config.html)

You can configure workload management (WLM) to enable concurrency scaling mode. For more information, see [Configuring workload management](http://docs.aws.amazon.com/redshift/latest/mgmt/workload-mgmt-config.html).Updated JDBC and ODBC drivers[https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-to-cluster.html](https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-to-cluster.html)

Amazon Redshift now supports new versions of the JDBC and ODBC drivers. For more information, see [Configure a JDBC connection](https://docs.aws.amazon.com/redshift/latest/mgmt/jdbc20-install.html).Deferred maintenance[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-defer-maintenance](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-defer-maintenance)

If you need to reschedule your cluster's maintenance window, you have the option to defer maintenance by up to 14 days. If we need to update hardware or make other mandatory updates during your period of deferment, we notify you and make the required changes. Your cluster isn't available during these updates. For more information, see [Deferring maintenance](https://docs.aws.amazon.com/redshift/latest/mgmt/defer-maintenance-window.html).Advance notification[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-events.html](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-events.html)

Amazon Redshift provides notification in advance for some events. These events have an event category of `pending`. For example, we send an advance notification if a hardware update is required for one of the nodes in your cluster. You can subscribe to pending events the same as other Amazon Redshift events. For more information, see [Subscribing to Amazon Redshift event notifications](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-event-notifications.html#working-with-event-notifications-subscribe).Elastic resize[https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html#elastic-resize](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html#elastic-resize)

Elastic resize is the fastest method to resize a cluster. Elastic resize adds or removes nodes on an existing cluster, then automatically redistributes the data to the new nodes. Because it doesn't create a new cluster, the elastic resize operation completes quickly, usually in a few minutes. For more information, see [Resizing clusters](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html).Cancel resize operation[http://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html](http://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html)

You can now cancel a resize operation while it is in progress. For more information, see [Resize operation overview](http://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html).Modify cluster to change encryption[http://docs.aws.amazon.com/redshift/latest/mgmt/changing-cluster-encryption.html](http://docs.aws.amazon.com/redshift/latest/mgmt/changing-cluster-encryption.html)

You can modify an unencrypted cluster to use AWS Key Management Service (AWS KMS) encryption, using either an AWS-managed key or a customer managed key. When you modify your cluster to enable KMS encryption, Amazon Redshift automatically migrates your data to a new encrypted cluster. You can also migrate an unencrypted cluster to an encrypted cluster by modifying the cluster.Amazon Redshift spectrum supports enhanced VPC routing[https://docs.aws.amazon.com/redshift/latest/mgmt/spectrum-enhanced-vpc.html](https://docs.aws.amazon.com/redshift/latest/mgmt/spectrum-enhanced-vpc.html)

You can now use Redshift Spectrum with enhanced VPC routing enabled for your cluster. You might need to perform additional configuration steps. For more information, see [Using Amazon Redshift spectrum with enhanced VPC routing](https://docs.aws.amazon.com/redshift/latest/mgmt/spectrum-enhanced-vpc.html). Query editor[https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html)

You can now run SQL queries from the Amazon Redshift Management Console. Workload execution breakdown chart[https://docs.aws.amazon.com/redshift/latest/mgmt/analyze-workload-performance.html](https://docs.aws.amazon.com/redshift/latest/mgmt/analyze-workload-performance.html)

You can now get a detailed view of your workload's performance by looking at the Workload Execution Breakdown chart in the console. For more information, see [Analyzing workload performance](https://docs.aws.amazon.com/redshift/latest/mgmt/analyze-workload-performance.html).Maintenance tracks[https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-maintenance-tracks](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-maintenance-tracks)

You can now determine if your cluster will always be updated to the latest version of Amazon Redshift or to a previous version by choosing a maintenance track. For more information, see [Choosing cluster maintenance tracks](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-maintenance-tracks). 

**Note**  
For a description of new features in Amazon Redshift, see [What's new](https://aws.amazon.com//redshift/whats-new).

The following table describes the important documentation changes to the *Amazon Redshift Management Guide* after June 2018. For notification about updates to this documentation, you can subscribe to an RSS feed.

 **API version: 2012-12-01** 

For a list of the changes to the *Amazon Redshift Database Developer Guide*, see [Amazon Redshift Database Developer Guide document history](https://docs.aws.amazon.com/redshift/latest/dg/doc-history.html).

| Change | Description | Date | 
| --- |--- |--- |
| [Amazon Redshift patch 200 released.](cluster-versions.md#cluster-version-200) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 200](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-200).  | March 26, 2026 | 
| [Amazon Redshift patch 199 released.](cluster-versions.md#cluster-version-199) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 199](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-199).  | March 4, 2026 | 
| [Amazon Redshift patch 198 released.](cluster-versions.md#cluster-version-198) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 198](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-198).  | February 3, 2026 | 
| [Update Amazon Redshift managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Added new `AmazonRedshiftFederatedAuthorization` managed policy. | November 21, 2025 | 
| [Amazon Redshift patch 197 released.](cluster-versions.md#cluster-version-197) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 197](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-197).  | November 20, 2025 | 
| [Amazon Redshift patch 196 released.](cluster-versions.md#cluster-version-196) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 196](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-196).  | November 10, 2025 | 
| [Amazon Redshift patch 195 released.](cluster-versions.md#cluster-version-195) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 195](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-195).  | October 24, 2025 | 
| [Amazon Redshift patch 194 released.](cluster-versions.md#cluster-version-194) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 194](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-194).  | October 1, 2025 | 
| [Amazon Redshift patch 193 released.](cluster-versions.md#cluster-version-193) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 193](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-193).  | August 26, 2025 | 
| [Amazon Redshift patch 192 released.](cluster-versions.md#cluster-version-192) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 192](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-192).  | July 30, 2025 | 
| [Amazon Redshift patch 191 released.](cluster-versions.md#cluster-version-191) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 191](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-191).  | June 24, 2025 | 
| [Amazon Redshift patch 190 released.](cluster-versions.md#cluster-version-190) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 190](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-190).  | May 7, 2025 | 
| [Update Amazon Redshift managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permission `lakeformation:GetDataAccess`. | March 13, 2025 | 
| [Amazon Redshift patch 189 released.](cluster-versions.md#cluster-version-189) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 189](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-189).  | March 7, 2025 | 
| [Amazon Redshift patch 188 released.](cluster-versions.md#cluster-version-188) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 188](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-188).  | February 5, 2025 | 
| [Amazon Redshift patch 187 released.](cluster-versions.md#cluster-version-187) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 187](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-187).  | December 20, 2024 | 
| [Update Amazon Redshift managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permissions `glue:GetCatalog` and `glue:GetCatalogs`. | December 3, 2024 | 
| [Amazon Redshift patch 186 released.](cluster-versions.md#cluster-version-186) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 186](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-186).  | October 22, 2024 | 
| [Amazon Redshift patch 185 released.](cluster-versions.md#cluster-version-185) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 185](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-185).  | October 9, 2024 | 
| [Amazon Redshift patch 184 released.](cluster-versions.md#cluster-version-184) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 184](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-184).  | September 12, 2024 | 
| [Amazon Redshift patch 183 released.](cluster-versions.md#cluster-version-183) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 183](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-183).  | August 8, 2024 | 
| [Amazon Redshift patch 182 released.](cluster-versions.md#cluster-version-182) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 182](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-182).  | June 26, 2024 | 
| [Amazon Redshift patch 181 released.](cluster-versions.md#cluster-version-181) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 181](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-181).  | May 1, 2024 | 
| [Update Amazon Redshift managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Update to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permission `servicequotas:GetServiceQuota` to access AWS quotas or limits. | March 8, 2024 | 
| [Update query editor v2 managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftQueryEditorV2FullAccess`, `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permissions `redshift-serverless:ListNamespaces` and `redshift-serverless:ListWorkgroups`. | February 21, 2024 | 
| [Update Amazon Redshift read-only access managed policy](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftReadOnlyAccess` managed policy with permission `redshift:ListRecommendations` to list Amazon Redshift Advisor recommendations. | February 7, 2024 | 
| [Amazon Redshift patch 180 released.](cluster-versions.md#cluster-version-180) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 180](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-180).  | December 29, 2023 | 
| [Amazon Redshift patch 179 released.](cluster-versions.md#cluster-version-179) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 179](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-179).  | November 9, 2023 | 
| [Update Amazon Redshift managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy with permissions `ec2:AssignIpv6Addresses` and `ec2:UnassignIpv6Addresses`. | October 31, 2023 | 
| [Amazon Redshift patch 178 released.](cluster-versions.md#cluster-version-178) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 178](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-178).  | September 25, 2023 | 
| [Update query editor v2 managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permissions `sqlworkbench:GetAutocompletionMetadata` and `sqlworkbench:GetAutocompletionResource`. | August 16, 2023 | 
| [Update Amazon Redshift managed policy](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy to grant permissions on AWS Secrets Manager to create and manage admin credential secrets. | August 14, 2023 | 
| [Amazon Redshift patch 177 released.](cluster-versions.md#cluster-version-177) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 177](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-177).  | August 3, 2023 | 
| [Amazon Redshift patch 176 released.](cluster-versions.md#cluster-version-176) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 176](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-176).  | June 8, 2023 | 
| [Amazon Redshift patch 175 released.](cluster-versions.md#cluster-version-175) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 175](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-175).  | April 28, 2023 | 
| [Update Amazon Redshift managed policy](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftServiceLinkedRolePolicy` managed policy to remove permissions for ec2 network-related actions. These were specifically associated with the *Purpose:RedshiftMigrateToVpc* resource tag. | April 27, 2023 | 
| [Update Amazon Redshift Data API managed policy](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftDataFullAccess` managed policy with permission `redshift:GetClusterCredentialsWithIAM`. | April 7, 2023 | 
| [Update query editor v2 managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permission `sqlworkbench:GetSchemaInference`. | March 21, 2023 | 
| [Amazon Redshift patch 174 released.](cluster-versions.md#cluster-version-174) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 174](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-174).  | March 11, 2023 | 
| [Update query editor v2 managed policies](https://docs.aws.amazon.com/redshift/latest/mgmt/redshift-iam-access-control-identity-based.html#security-iam-awsmanpol-updates) | Updates to `AmazonRedshiftQueryEditorV2NoSharing`, `AmazonRedshiftQueryEditorV2ReadSharing`, and `AmazonRedshiftQueryEditorV2ReadWriteSharing` managed policies with permission `sqlworkbench:AssociateNotebookWithTab`. | February 2, 2023 | 
| [Amazon Redshift patch 173 released.](cluster-versions.md#cluster-version-173) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 173](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-173).  | January 20, 2023 | 
| [Amazon Redshift patch 172 released.](cluster-versions.md#cluster-version-172) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 172](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-172).  | November 17, 2022 | 
| [Amazon Redshift patch 171 released.](cluster-versions.md#cluster-version-171) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 171](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-171).  | November 9, 2022 | 
| [Amazon Redshift patch 170 released.](cluster-versions.md#cluster-version-170) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 170](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-170).  | July 20, 2022 | 
| [Amazon Redshift patch 169 released.](cluster-versions.md#cluster-version-169) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 169](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-169).  | June 8, 2022 | 
| [Amazon Redshift patch 168 released.](cluster-versions.md#cluster-version-168) | A new Amazon Redshift patch is being deployed. It takes several weeks for a new version to become available in all Amazon Redshift supported AWS Regions. For more information about this version, see [Amazon Redshift patch 168](https://docs.aws.amazon.com/redshift/latest/mgmt/cluster-versions.html#cluster-version-168).  | April 19, 2022 | 
| [Support for authentication profiles with Amazon Redshift drivers](https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-with-authentication-profiles.html) | You can now connect to Amazon Redshift with an authentication profile.  | August 2, 2021 | 
| [Support for cross-VPC endpoints for Amazon Redshift powered by AWS PrivateLink](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-cross-vpc.html) | You can now use Redshift-managed VPC endpoints with Amazon Redshift.  | April 1, 2021 | 
| [Support for Amazon Redshift query editor enhancements](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html) | You can now use the query editor with enhanced VPC routing, longer query run times, and more cluster node types.  | February 17, 2021 | 
| [Support for the console integration with partners](https://docs.aws.amazon.com/redshift/latest/mgmt/partner-integration.html) | You can integrate with partners using the Amazon Redshift console.  | December 9, 2020 | 
| [Support for the ability to move clusters between Availability Zones](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-recovery.html) | You can now move RA3 clusters between Availability Zones.  | December 9, 2020 | 
| [Support for ra3.xlplus node types](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html) | You can now create ra3.xlplus node types.  | December 9, 2020 | 
| [Support for JDBC driver version 2.0](https://docs.aws.amazon.com/redshift/latest/mgmt/jdbc20-install.html) | You can now configure the JDBC driver version 2.0.  | November 5, 2020 | 
| [Support for Lambda UDFs and tokenization](https://docs.aws.amazon.com/redshift/latest/mgmt/data-tokenization.html) | You can now can write Lambda UDFs to enable external tokenization of data.  | October 26, 2020 | 
| [Support to schedule the run of an SQL statement](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor-schedule-query.html) | You can now schedule a query on the Amazon Redshift console.  | October 22, 2020 | 
| [Support for the Data API for Amazon Redshift](https://docs.aws.amazon.com/redshift/latest/mgmt/data-api.html) | Amazon Redshift can now be accessed using the built-in Data API. Documentation updates include an *Amazon Redshift Data API Reference*.  | September 10, 2020 | 
| [Support for Amazon Redshift console query monitoring](https://docs.aws.amazon.com/redshift/latest/mgmt/performance-metrics-console.html) | Updated the guide to describe new query monitoring graphs.  | May 7, 2020 | 
| [Support for usage limits](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-usage-limits.html) | Updated the guide to describe usage limits.  | April 23, 2020 | 
| [Multi-factor authentication](https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html) | Updated the guide to describe multi-factor authentication support.  | April 20, 2020 | 
| [Elastic resize now supports node type changes](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html) | Updated elastic resize description.  | April 6, 2020 | 
| [Support for ra3.4xlarge node types with managed storage](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html) | Updated the guide to include ra3.4xlarge node types.  | April 2, 2020 | 
| [Support for pause and resume](https://docs.aws.amazon.com/redshift/latest/mgmt/managing-cluster-operations.html#rs-mgmt-pause-resume-cluster) | Updated the guide to describe the pause and resume cluster operations.  | March 11, 2020 | 
| [Support for Microsoft Azure AD as an identity provider](https://docs.aws.amazon.com/redshift/latest/mgmt/options-for-providing-iam-credentials.html#setup-azure-ad-identity-provider) | Updated the guide to describe the steps to use Microsoft Azure AD as an identity provider.  | February 10, 2020 | 
| [Support for the RA3 node type](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html) | Updated the guide to describe the new RA3 node type.  | December 3, 2019 | 
| [Support for the new console](https://docs.aws.amazon.com/redshift/latest/mgmt/welcome.html) | Updated the guide to describe the new Amazon Redshift console.  | November 11, 2019 | 
| [Security information updates](http://docs.aws.amazon.com/redshift/latest/mgmt/iam-redshift-user-mgmt.html) | Updates to the security information documentation. | June 24, 2019 | 
| [Snapshot enhancements](http://docs.aws.amazon.com/redshift/latest/mgmt/working-with-snapshots.html) | Amazon Redshift now supports several enhancements to managing and scheduling snapshots. | April 4, 2019 | 
| [Concurrency scaling](http://docs.aws.amazon.com/redshift/latest/mgmt/workload-mgmt-config.html) | You can configure workload management (WLM) to enable concurrency scaling mode. For more information, see [Configuring workload management](http://docs.aws.amazon.com/redshift/latest/mgmt/workload-mgmt-config.html). | March 21, 2019 | 
| [Updated JDBC and ODBC drivers](https://docs.aws.amazon.com/redshift/latest/mgmt/connecting-to-cluster.html) | Amazon Redshift now supports new versions of the JDBC and ODBC drivers. For more information, see [Configure a JDBC connection](https://docs.aws.amazon.com/redshift/latest/mgmt/jdbc20-install.html). | February 4, 2019 | 
| [Deferred maintenance](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-defer-maintenance) | If you need to reschedule your cluster's maintenance window, you have the option to defer maintenance by up to 14 days. If we need to update hardware or make other mandatory updates during your period of deferment, we notify you and make the required changes. Your cluster isn't available during these updates. For more information, see [Deferring maintenance](https://docs.aws.amazon.com/redshift/latest/mgmt/defer-maintenance-window.html). | November 20, 2018 | 
| [Advance notification](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-events.html) | Amazon Redshift provides notification in advance for some events. These events have an event category of `pending`. For example, we send an advance notification if a hardware update is required for one of the nodes in your cluster. You can subscribe to pending events the same as other Amazon Redshift events. For more information, see [Subscribing to Amazon Redshift event notifications](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-event-notifications.html#working-with-event-notifications-subscribe). | November 20, 2018 | 
| [Elastic resize](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html#elastic-resize) | Elastic resize is the fastest method to resize a cluster. Elastic resize adds or removes nodes on an existing cluster, then automatically redistributes the data to the new nodes. Because it doesn't create a new cluster, the elastic resize operation completes quickly, usually in a few minutes. For more information, see [Resizing clusters](https://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html). | November 15, 2018 | 
| [Cancel resize operation](http://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html) | You can now cancel a resize operation while it is in progress. For more information, see [Resize operation overview](http://docs.aws.amazon.com/redshift/latest/mgmt/resizing-cluster.html). | November 2, 2018 | 
| [Modify cluster to change encryption](http://docs.aws.amazon.com/redshift/latest/mgmt/changing-cluster-encryption.html) | You can modify an unencrypted cluster to use AWS Key Management Service (AWS KMS) encryption, using either an AWS-managed key or a customer managed key. When you modify your cluster to enable KMS encryption, Amazon Redshift automatically migrates your data to a new encrypted cluster. You can also migrate an unencrypted cluster to an encrypted cluster by modifying the cluster. | October 16, 2018 | 
| [Amazon Redshift spectrum supports enhanced VPC routing](https://docs.aws.amazon.com/redshift/latest/mgmt/spectrum-enhanced-vpc.html) | You can now use Redshift Spectrum with enhanced VPC routing enabled for your cluster. You might need to perform additional configuration steps. For more information, see [Using Amazon Redshift spectrum with enhanced VPC routing](https://docs.aws.amazon.com/redshift/latest/mgmt/spectrum-enhanced-vpc.html).  | October 10, 2018 | 
| [Query editor](https://docs.aws.amazon.com/redshift/latest/mgmt/query-editor.html) | You can now run SQL queries from the Amazon Redshift Management Console.  | October 4, 2018 | 
| [Workload execution breakdown chart](https://docs.aws.amazon.com/redshift/latest/mgmt/analyze-workload-performance.html) | You can now get a detailed view of your workload's performance by looking at the Workload Execution Breakdown chart in the console. For more information, see [Analyzing workload performance](https://docs.aws.amazon.com/redshift/latest/mgmt/analyze-workload-performance.html). | July 30, 2018 | 
| [Maintenance tracks](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-maintenance-tracks) | You can now determine if your cluster will always be updated to the latest version of Amazon Redshift or to a previous version by choosing a maintenance track. For more information, see [Choosing cluster maintenance tracks](https://docs.aws.amazon.com/redshift/latest/mgmt/working-with-clusters.html#rs-mgmt-maintenance-tracks).  | July 26, 2018 | 

The following table describes the important changes to the *Amazon Redshift Management Guide* before July 2018.


| Change | Description | Release date | 
| --- | --- | --- | 
| New CloudWatch metrics | New CloudWatch metrics added for monitoring query performance. For more information, see [Performance data in Amazon Redshift](metrics-listing.md) | May 17, 2018 | 
|  HSM encryption  | Amazon Redshift supports only AWS CloudHSM for hardware security module (HSM) key management. For more information, see [Amazon Redshift database encryption](working-with-db-encryption.md).  |  March 6, 2018  | 
| IAM Role Chaining | If an IAM role attached to your cluster doesn't have access to the necessary resources, you can chain another role, possibly belonging to another account. Your cluster then temporarily assumes the chained role to access the data. You can also grant cross-account access by chaining roles. Each role in the chain assumes the next role in the chain, until the cluster assumes the role at the end of chain. You can chain a maximum of 10 roles. For more information, see [Chaining IAM roles in Amazon Redshift](authorizing-redshift-service-chaining-roles.md). | February 23, 2018 | 
| New DC2 node types | The new generation of dense compute (DC) node types offer much better performance at the same price as DC1. To take advantage of performance improvements, you can migrate your DC1 cluster to the newer DC2 node types. For more information, see [Clusters and nodes in Amazon Redshift](working-with-clusters.md#rs-about-clusters-and-nodes). | October 17, 2017 | 
| ACM certificates | Amazon Redshift is replacing the SSL certificates on your clusters with AWS Certificate Manager (ACM) issued certificates. ACM is a trusted public certificate authority (CA) that is trusted by most current systems. You might need to update your current trust root CA certificates to continue to connect to your clusters using SSL. For more information, see [Transitioning to ACM certificates for SSL connections](connecting-transitioning-to-acm-certs.md). | September 18, 2017 | 
| Service-linked roles | A service-linked role is a unique type of IAM role that is linked directly to Amazon Redshift. Service-linked roles are predefined by Amazon Redshift and include all the permissions that the service requires to call AWS services on behalf of your Amazon Redshift cluster. For more information, see [Using service-linked roles for Amazon Redshift](using-service-linked-roles.md). | September 18, 2017 | 
| IAM database user authentication | You can configure your system to permit users to create user credentials and log on to the database based on their IAM credentials. You can also configure your system to let users sign on using federated single sign-on through a SAML 2.0-compliant identity provider. For more information, see [Using IAM authentication to generate database user credentials](generating-user-credentials.md). | August 11, 2017 | 
| Table-level restore supports enhanced VPC routing | Table-level restore is now supported on clusters that use [Controlling network traffic with enhanced VPC routing](enhanced-vpc-routing.md). For more information, see [Restoring a table from a snapshot](working-with-snapshot-restore-table-from-snapshot.md). | July 19, 2017 | 
| Query monitoring rules | Using WLM query monitoring rules, you can define metrics-based performance boundaries for WLM queues and specify what action to take when a query goes beyond those boundaries—log, hop, or abort. You define query monitoring rules as part of your workload management (WLM) configuration. For more information, see [Workload management](workload-mgmt-config.md). | April 21, 2017 | 
|  Enhanced VPC routing  |  When you use Amazon Redshift enhanced VPC routing, Amazon Redshift forces all [COPY](https://docs.aws.amazon.com/redshift/latest/dg/r_COPY.html) and [UNLOAD](https://docs.aws.amazon.com/redshift/latest/dg/r_UNLOAD.html) traffic between your cluster and your data repositories through your Amazon VPC. For more information, see [Controlling network traffic with Redshift enhanced VPC routing](enhanced-vpc-routing.md).  |  September 15, 2016  | 
| New connection log fields | The [Connection log](db-auditing.md#db-auditing-connection-log) audit log has two new fields to track SSL connections. If you routinely load audit logs to an Amazon Redshift table, you will need to add the following new columns to the target table: sslcompression and sslexpansion. | May 5, 2016 | 
|  IAM roles for COPY and UNLOAD  | You can now specify one or more AWS Identity and Access Management (IAM) roles that your cluster can use for authentication to access other AWS services. IAM roles provide a more secure alternative to provide authentication with COPY, UNLOAD, or CREATE LIBRARY commands. For more information, see [Authorizing Amazon Redshift to access AWS services on your behalf](authorizing-redshift-service.md) and [Authorizing COPY, UNLOAD, CREATE EXTERNAL FUNCTION, and CREATE EXTERNAL SCHEMA operations using IAM rolesAuthorizing operations using IAM roles](copy-unload-iam-role.md).  | March 29, 2016 | 
| Restore from table |  You can restore a table from a cluster snapshot to a new table in an active cluster. For more information, see [Restoring a table from a snapshot](working-with-snapshot-restore-table-from-snapshot.md).  |  March 10, 2016  | 
|  Using IAM Condition in policies  |  You can further restrict access to resources by using the Condition element in IAM policies. For more information, see [Using IAM policy conditions for fine-grained access control](redshift-iam-access-control-overview.md#redshift-policy-resources.conditions).  |  December 10, 2015  | 
| Modify publicly accessible |  You can modify an existing cluster in a VPC to change whether it is publicly accessible. For more information, see [Modifying a cluster](modify-cluster.md).  |  November 20, 2015  | 
|  Documentation fixes  |  Published various documentation fixes.   |  August 28, 2015  | 
|  Documentation update  | Updated troubleshooting guidance about configuring network settings to ensure that hosts with different maximum transmission unit (MTU) sizes can determine the packet size for a connection. For more information, see [Queries appear to hang and sometimes fail to reach the cluster](troubleshooting-connections.md#connecting-drop-issues).  |  August 25, 2015  | 
|  Documentation update  | Revised entire section about parameter groups for better organization and clarity. For more information, see [Amazon Redshift parameter groups](working-with-parameter-groups.md).  |  August 17, 2015  | 
|  WLM dynamic properties  | The WLM configuration parameter now supports applying some properties dynamically. Other properties remain static changes and require that associated clusters be rebooted so that the configuration changes can be applied. For more information, see [WLM dynamic and static properties](workload-mgmt-config.md#wlm-dynamic-and-static-properties) and [Amazon Redshift parameter groups](working-with-parameter-groups.md).  |  August 3, 2015  | 
| Copy KMS encrypted clusters to another AWS Region | Added content about configuring snapshot copy grants to enable copying of AWS KMS-encrypted clusters to another AWS Region. For more information, see [Copying AWS KMS–encrypted snapshots to another AWS Region](working-with-db-encryption.md#configure-snapshot-copy-grant).  |  July 28, 2015  | 
|  Documentation update  | Updated the database encryption section to better explain how Amazon Redshift uses AWS KMS or HSMs for managing keys, and how the encryption process works with each of these options. For more information, see [Amazon Redshift database encryption](working-with-db-encryption.md).  |  July 28, 2015  | 
|  New node type  | Amazon Redshift now offers a new node type, DS2. Updated documentation references to existing node types to use new names introduced in this release. Also revised the section to better explain the node type combinations and clarify default quota limits. For more information, see [Clusters and nodes in Amazon Redshift](working-with-clusters.md#rs-about-clusters-and-nodes).  |  June 9, 2015  | 
| Reserved node offerings | Added content about new reserved node offerings. Also revised the section to better explain and compare the available offerings, and provided examples to demonstrate how on-demand and reserved node pricing affect billing. For more information, see [Reserved nodes](purchase-reserved-node-instance.md).  |  June 9, 2015  | 
|  Documentation fixes  |  Published various documentation fixes.   |  April 30, 2015  | 
| New feature |  This release of Amazon Redshift introduces new ODBC and JDBC drivers optimized for use with Amazon Redshift. For more information, see [Connecting to an Amazon Redshift data warehouse using SQL client tools](connecting-to-cluster.md).   |  February 26, 2015  | 
|  New feature  |  This release of Amazon Redshift introduces cluster performance metrics that allow you to view and analyze query execution details. For more information, see [Viewing queries and loads](performance-metrics-queries.md).  |  February 26, 2015  | 
|  Documentation update  |  Added a new example policy that demonstrates granting permission to common AWS service actions and resources on which Amazon Redshift relies. For more information, see [Customer managed policy examples](redshift-iam-access-control-identity-based.md#redshift-iam-accesscontrol.examples).  |  January 16, 2015  | 
|  Documentation update  |  Updated guidance about setting the maximum transmission unit (MTU) to disable TCP/IP jumbo frames. For more information, see [Use EC2 to create your cluster](working-with-clusters.md#cluster-platforms) and [Queries appear to hang and sometimes fail to reach the cluster](troubleshooting-connections.md#connecting-drop-issues).  |  January 16, 2015  | 
|  Documentation update  |  Revised the content about the `wlm_json_configuration` parameter, and provided example syntax to configure this parameter by using the AWS CLI on the Linux, Mac OS X, and Microsoft Windows operating systems. For more information, see [Workload management](workload-mgmt-config.md).  |  January 13, 2015  | 
|  Documentation update  |  Added missing event notifications and descriptions. For more information, see [Amazon Redshift provisioned cluster event notifications](working-with-event-notifications.md).  |  January 8, 2015  | 
|  Documentation update  |  Updated guidance about IAM policies for Amazon Redshift actions and resources. Revised the section to improve organization and clarity. For more information, see [Security in Amazon Redshift](iam-redshift-user-mgmt.md).  |  November 21, 2014  | 
|  New feature  |  This release of Amazon Redshift introduces the ability to encrypt clusters using encryption keys from AWS Key Management Service (AWS KMS). AWS KMS combines secure, highly available hardware and software to provide a key management system scaled for the cloud. For more information about AWS KMS and encryption options for Amazon Redshift, see [Amazon Redshift database encryption](working-with-db-encryption.md) and [Cluster operations](managing-cluster-operations.md).  |  November 12, 2014  | 
|  New feature  |  This release of Amazon Redshift introduces the ability to tag resources, such as clusters and snapshots. Tags enable you to provide user-defined metadata to categorize your billing reports based on cost allocation, and to help you better identify resources at a glance. For more information, see [Tag resources in Amazon Redshift](amazon-redshift-tagging.md).  |  November 4, 2014  | 
|  New feature  |  Increased the maximum node limit to 128 nodes for dw1.8xlarge and dw2.8xlarge node sizes. For more information, see [Clusters and nodes in Amazon Redshift](working-with-clusters.md#rs-about-clusters-and-nodes).   |  October 30, 2014  | 
|  New feature  |  Added the ability to terminate queries and loads from the Amazon Redshift console. For more information, see [Viewing queries and loads](performance-metrics-queries.md) and [Viewing cluster metrics during load operations](performance-metrics-loads.md).   |  October 28, 2014  | 
|  Documentation fixes  |  Published various documentation fixes.  |  October 17, 2014  | 
|  New content  |  Added content about shutting down clusters and deleting clusters. For more information, see [Shutting down and deleting a cluster](rs-mgmt-shutdown-delete-cluster.md).   |  August 14, 2014  | 
|  Documentation update  |   Clarified the behavior of the **Allow Version Upgrade** setting for clusters. For more information, see [Amazon Redshift provisioned clusters](working-with-clusters.md).   |  August 14, 2014  | 
|  Documentation update  |  Revised procedures, screenshots, and organization of topic about working with clusters in Amazon Redshift console. For more information, see [Cluster operations](managing-cluster-operations.md).  |  July 11, 2014  | 
|  New content  |  Added a new tutorial about resizing Amazon Redshift clusters, including how to resize a cluster while minimizing the amount of time that the cluster is in read-only mode. For more information, see [Resizing a cluster](resizing-cluster.md).  |  June 27, 2014  | 
|  New feature  |  Added the ability to rename clusters. For more information, see [Renaming a cluster](rs-mgmt-rename-cluster.md) and [Modifying a cluster](modify-cluster.md).  |  June 2, 2014  | 
|  New feature  |  Added options to select a different parameter group and security group when you restore a cluster from a snapshot. For more information, see [Restoring a cluster from a snapshot](working-with-snapshot-restore-cluster-from-snapshot.md).   |  May 12, 2014  | 
|  New feature  |  Added new section to describe how to configure a default Amazon CloudWatch alarm to monitor the percentage of disk space used in an Amazon Redshift cluster. This alarm is a new option in the cluster creation process. For more information, see [Default disk space alarm](working-with-clusters.md#rs-clusters-default-disk-usage-alarm).  |  April 28, 2014  | 
|  Documentation update  |  Clarified information about Elliptic curve Diffie—Hellman Exchange (ECDHE) support in Amazon Redshift. For more information, see [SSL](connecting-ssl-support.md#connect-using-ssl).  |  April 22, 2014  | 
|  New feature  |  Added statement about Amazon Redshift support for the Elliptic curve Diffie—Hellman (ECDH) key agreement protocol. For more information, see [SSL](connecting-ssl-support.md#connect-using-ssl).  |  April 18, 2014  | 
|  Documentation update  | Revised and reorganized the topics in the [Connecting to an Amazon Redshift data warehouse using SQL client tools](connecting-to-cluster.md) section. Added more information about JDBC and ODBC connections, and a new troubleshooting section for connection issues. | April 15, 2014 | 
|  Documentation update  |   Added version in IAM policy examples throughout the guide.   |  April 3, 2014  | 
|  Documentation update  |   Added information about how pricing works when you resize a cluster. For more information, see [Reserved nodes](purchase-reserved-node-instance.md).   |  April 2, 2014  | 
|  New feature  |  Added a section about a new parameter, `max_cursor_result_set_size`, which sets the maximum result set size, in megabytes, that can be stored per individual cursor. This parameter value also affects the number of concurrently active cursors for the cluster. For more information, see [Amazon Redshift parameter groups](working-with-parameter-groups.md).  |  March 28, 2014  | 
|  New feature  |  Added explanation about the **Cluster Version** field now including both cluster engine version and database revision number. For more information, see [Amazon Redshift provisioned clusters](working-with-clusters.md).  |  March 21, 2014  | 
|  New feature  |  Updated the resize procedure to show the new resize progress information on the cluster's **Status** tab. For more information, see [Resizing a cluster](resizing-cluster.md).  |  March 21, 2014  | 
|  Documentation update  | Reorganized and updated [What is Amazon Redshift?](welcome.md) and revised [Amazon Redshift provisioned clusters overview](overview.md). Published various documentation fixes. | February 21, 2014 | 
|  New feature  |  Added new node types and sizes for Amazon Redshift clusters, and rewrote the related cluster overview topic for better organization and clarity based on feedback. For more information, see [Amazon Redshift provisioned clusters](working-with-clusters.md).  |  January 23, 2014  | 
|  New feature  |  Added information about using elastic IP (EIP) addresses for publicly-accessible Amazon Redshift clusters in virtual private clouds. For more information about EIP in Amazon Redshift, see [Redshift resources in a VPC](managing-clusters-vpc.md) and [Creating a Redshift provisioned cluster or Amazon Redshift Serverless workgroup in a VPC](getting-started-cluster-in-vpc.md).  |  December 20, 2013  | 
|  New feature  |  Added information about the AWS CloudTrail logs for Amazon Redshift. For more information about Amazon Redshift support for CloudTrail, see [Logging with CloudTrail](logging-with-cloudtrail.md).  |  December 13, 2013  | 
|  New feature  |  Added information about the new user activity log and the `enable_user_activity_logging` database parameter for the database audit logging feature in Amazon Redshift. For more information about database audit logging, see [Database audit logging](db-auditing.md). For more information about database parameters, see [Amazon Redshift parameter groups](working-with-parameter-groups.md).   |  December 6, 2013  | 
|  New feature  |  Updated to describe configuring Amazon Redshift to automatically copy automated and manual snapshots to a secondary AWS Region. For more information about configuring cross-Region snapshot copy, see [Copying a snapshot to another AWS Region](cross-region-snapshot-copy.md).  |  November 14, 2013  | 
|  New feature  |  Added section to describe Amazon Redshift audit logging for connection and user activity, and storing these logs in Amazon S3. For more information about database audit logging, see [Database audit logging](db-auditing.md).  |  November 11, 2013  | 
|  New feature  |  Added section to describe Amazon Redshift encryption with new features for managing encryption keys in a hardware security module (HSM) and rotating encryption keys. For more information about encryption, HSM, and key rotation, see [Amazon Redshift database encryption](working-with-db-encryption.md), [Encryption using hardware security modules](working-with-db-encryption.md#working-with-HSM), and [Encryption key rotation](working-with-db-encryption.md#working-with-key-rotation).  |  November 11, 2013  | 
|  New feature  |  Updated to describe publishing notifications of Amazon Redshift events by using Amazon SNS. For information about Amazon Redshift event notifications, see [Amazon Redshift provisioned cluster event notifications](working-with-event-notifications.md).  |  November 11, 2013  | 
|  New feature  |  Updated to describe IAM resource level permissions. For information about Amazon Redshift IAM permissions, see [Security in Amazon Redshift](iam-redshift-user-mgmt.md).  |  August 9, 2013  | 
|  New feature  |  Updated to describe restore progress metrics. For more information, see [Restoring a cluster from a snapshot](working-with-snapshot-restore-cluster-from-snapshot.md).  |  August 9, 2013  | 
|  New feature  |  Updated to describe cluster snapshot sharing and create snapshot progress metrics. For more information, see [Sharing a snapshot](working-with-snapshot-share-snapshot.md).  |  July 17, 2013  | 
|  Documentation fixes  |  Published various documentation fixes.   |  July 8, 2013  | 
|  New console screens  |  Updated the *Amazon Redshift Management Guide* to match changes in the Amazon Redshift console.   |  April 22, 2013  | 
|  New guide  |  This is the first release of the *Amazon Redshift Management Guide*.   |  February 14, 2013  |