The Long Term Support Candidate LTC-138 has been promoted to ChromeOS LTS-138 and is rolling out to most ChromeOS devices. The current version is 138.0.7204.293 (Platform Version: 16295.78.0).
If you are currently on the ChromeOS Long Term Support (LTS) channel (and not pinned to 132), your devices will automatically update to ChromeOS LTS 138.
Release notes for LTS-138 can be found here
Giuliana Pritchard
Google ChromeOS