There’s a significant issue with a few models of Chromebooks, but you shouldn’t have anything to worry about. Google has confirmed that there is a critical bug in the Chromebook automatic firmware updater and thus the company has suspended automatic updates until it is fixed.
There is a critical bug in the firmware updater that we are actively investigating which may impact few devices during an auto update: Lenovo N22 11.6, Acer Chromebook R11, Sanance / Chromebook 14, Asus Chromebook C300SA and ThinkPad 11e Chromebook. As a precaution, we have temporarily paused the automatic updates for these units until we are confident the problem is root caused/resolved. We should be able to resume automatic updates in the next coming days and confirm on this bug accordingly.
It seems the issue is that people are getting stuck on old builds without a way of updating, and apps have even stopped working due to people being stuck on old versions or even unstable channels.
If you own one of these Chromebooks, your device won’t be updated automatically for at least a few days. If you happened to run into an actual issue, Google should be working on fixing it.