The Stable channel has been updated to 28.0.1500.95 for all Chrome OS devices (Platform version: 4100.89.0). This build contains a kernel version update in the TPM. 
Devices will be receiving this update over the next several days.

If you find new issues, please let us know by visiting our help site 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).
Josafat Garcia
Google Chrome