A surprising and almost unheard of fourth stable channel release for Chrome OS has landed. The release to build 66.0.3359.203 (Platform version: 10452.99.0), based on Chrome 66, comes just days before the anticipated update to Chrome 67 in the Chrome OS Stable Channel. It comes two weeks after a rare 3rd build in the channel.
The reasoning behind the fourth update is not known and the notoriously cryptic release notes from the Chromium team within Google aren’t much help in solving the mystery. They merely state the generic, “This build contains a number of bug fixes and security updates“. There isn’t even a link to the Git for the release.