The Dev channel has been updated to 52.0.2717.5 (Platform version: 8249.2.0) for all Chrome OS devices except for Acer Chromebook R11 and Samsung Chromebook 2 13" . This build contains a number of bug fixes, security updates and feature enhancements. A list of changes can be found here.
If you find new issues, please let us know by visiting our forum or filing a bug. Interested in switching channels? Find out how. You can submit feedback using ‘Report an issue...’ in the Chrome menu (3 horizontal bars in the upper right corner of the browser).