The Stable channel has been updated to 27.0.1453.103 (Platform version: 3912.79.0) for all Chrome OS devices. This build contains a number of new features, bug fixes and security improvements.
Machines will be receiving updates over then next several days.

Release Highlights:

* Panel windows for chat and more
* New Launcher positioning mode
* Per App list of open tabs & windows
* Horizontal three finger scrub moves between tabs
* New folder hierarchy on file manager
* Autocomplete in Drive search
* Memory management optimization
* Enhanced support for common wireless touchpads/mice
* Updated Chrome Office Viewer extension
* Pepper Flash updated to 11.7.700.202-r2
* GTalk plugin updated to 3.15.2.0
More at the Chrome OS Releases Blog

--jeremy