Heads up to all ChromeOS users in the dev channel. I am currently going through the changelogs to understand what changed and will be updating this post as I find things. If you spot anything, please feel free to drop a comment below.
Application Launcher Fix
ChromeOS 70.0.3524.2 introduced a nasty bug that caused any application launched from the application launcher to immediately cause ChromeOS to crash. This has been fixed in this build.
Linux GUI Applications Are Broken
Many Linux Applications will fail on this upgrade. You will now see a semi-transparent ghost of the linux application when you try to run it from the command or launcher. Bug filed