The second build of Chrome OS based on Chrome 66 has landed in the platform’s Dev channel, just two days after the first build was released. The new build is version 66.0.3350.3 (Platform version: 10425.0.0) for those keeping score at home and should be available to devices running in what is effectively the Alpha channel for the platform.
Just like the first release of Chrome 66, there were no release notes provided on this update nor any links to logs to see what had changes. The Chromium team only provided the generic, “This build contains a number of bug fixes, security updates and feature enhancements“. The lack of release notes however is not uncommon, especially in the Dev Channel.
As reported previously, the two highlights of the 66 train for Chrome OS relates to the Symantec trusted certificates prior to June 1, 2016 being revoked and support for split-screen resizing of Android apps while in tablet mode. There will, of course, be a raft of security fixes and other performance improvements too.
Right now the Chromium team is targeting an April 2018 release of Chrome 66 on Chrome OS so we are still a few months away. The timing however fits within the normal cadence of releases on the platform and across the Chrome browser for desktops and Android.
Finally, keep in mind that the Dev Channel is really aimed for developers and testers only. It is best to consider it as alpha level code meaning that you will run into plenty of bugs and other performance issues as it is being developed.