Chrome OS has been updated to version 56 bringing some nice interface updates. Here are the details from google.
The Stable channel has been updated to 56.0.2924.87 (Platform version: 9000.82.0) for all Chrome OS devices except for ASUS Chromebook Flip C100PA, Google Chromebook Pixel (2015), Acer Chromebook R11. This build contains a number of bug fixes, security updates, and feature enhancements. Systems will be receiving updates over the next several days.
Some highlights of these changes are:
- Material Design Chrome OS shelf and system menu
- Flash Component Updater for Chrome OS
- New version of the ChromeVox screen reader is now the default across all Chromebooks
Source Google Chrome blog