# Document history


The following table describes important changes to the AWS IoT ExpressLink Programmer's Guide starting with v1.0. We also update the documentation to address any errors found or feedback received.


****  

| Change | Description | Date | 
| --- | --- | --- | 
| version 1.2 |  The following sections and tables were updated: [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/iot-expresslink/archive/v1.2/programmersguide/elpg-history.html)  | October 27, 2023 | 
| version 1.1.2 |  The following sections and tables were updated: [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/iot-expresslink/archive/v1.2/programmersguide/elpg-history.html)  | July 25, 2023 | 
| version 1.1.1 |  The following sections were added: [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/iot-expresslink/archive/v1.2/programmersguide/elpg-history.html) The following sections and tables were updated: [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/iot-expresslink/archive/v1.2/programmersguide/elpg-history.html) The following sections were removed: [\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/iot-expresslink/archive/v1.2/programmersguide/elpg-history.html)  | November 17, 2022 | 
| version 1.0 | Initial release. | June 20, 2022 |