www.celsoazevedo.com/files/android/google-camera/f/changelog566/

Fixed Pixel AWB.
Fixes many of the bugs present on previous 6.2.030 versions.
Better default settings for more phones.
Added setting to enable/disable tracking autofocus.
Other stuff.
Important note: to make the start up message disappear, enable "advanced mode" (Settings > About), then go to Settings > HDR+ control and select the "Custom Lib Repo" (eg: stable). Restart the app, go to the same place and now select the lib (eg: stock by google). After doing this, the message will only be displayed one more time and then go away.

This should be fixed/improved before a final version is released.