# Document history
<a name="public-doc-history"></a>

The following table describes the important changes to the documentation since the last release of Amazon ECR Public. We also update the documentation frequently to address the feedback that you send us.


| Change | Description | Date | 
| --- | --- | --- | 
| IPv6 support | Added support for making requests to Amazon ECR Public registries using both IPv4-only and dual-stack (IPv4 and IPv6) endpoints. For more information, see [Making requests to Amazon ECR Public registries](public-ecr-requests.md). | 30 April 2025 | 
| AWS Managed Policies for Amazon ECR Public | Amazon ECR Public added documentation of AWS managed policies. For more information, see [AWS managed policies for Amazon ECR Public](public-security-iam-awsmanpol.md). | 24 June 2021 | 
| Tagging support | Added support for tagging your public repositories. For more information, see [Tag an Amazon ECR Public repository](ecr-public-using-tags.md). | 24 Feb 2021 | 
| Amazon ECR Public general availability | Amazon Elastic Container Registry Public is a public AWS container image registry service that is secure, scalable, and reliable. | 1 Dec 2020 |