# Document history
<a name="elpg-history"></a>

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.


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| Change | Description | Date | 
| --- | --- | --- | 
| version 1.3 | The following sections were added:[See the AWS documentation website for more details](http://docs.aws.amazon.com/iot-expresslink/latest/programmersguide/elpg-history.html) | August 27, 2025 | 
| 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/latest/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/latest/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/latest/programmersguide/elpg-history.html)<br />The following sections and tables were updated:[See the AWS documentation website for more details](http://docs.aws.amazon.com/iot-expresslink/latest/programmersguide/elpg-history.html)<br />The following sections were removed:[See the AWS documentation website for more details](http://docs.aws.amazon.com/iot-expresslink/latest/programmersguide/elpg-history.html) | November 17, 2022 | 
| version 1.0 | Initial release. | June 20, 2022 |