The Beta channel has been updated to 50.0.2661.91(Platform version: 7978.66.0) for all Chrome OS devices. 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).