The FAB is a red button which allows you to quickly create and share a new post from most places in the app. In this release, the button has been turned grey when viewing a Google+ Community, it's still red everywhere else though.
Since launching Google Photos, officially separating the service from Google+, the old Google+ Photos Auto Backup settings stuck around longer than they should have. 5.7 gives the redundant settings the old boot, clearing up any potential confusion to those still thinking Google+ Photos is a thing.
Other tweaks such as a loading spinner when viewing a profile polishes the experience a little, and a bug which caused an animated profile photo to display incorrectly has been fixed. Other than that, expect a couple of other squashed bugs and the usual slew of performance tune-ups.
Download
Google+ 5.7 for Android is rolling out now on Google Play, but if you're as impatient as we are, you can grab the APK file straight from APKmirror.com. Not quite sure how to update an app manually? Not to worry, we've got you covered - Check out +Gabriel Komarnicki's simple tutorial here and you'll be rocking the latest Google+ release in minutes.