Hangouts API Release Notes - Previous Releases Note: Also see the latest Stable channel release and Developer channel release of the Hangouts API. Previous releases: Version 1.4 Version 1.3 Version 1.2 Version 1.1 and earlier For release notes for other Google+ APIs, see Google+ Platform Release Notes. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Last updated May 28, 2015.