The beta track for the Facebook app has been updated today with a few useful features, showing once again that it intends on iterating quickly with its beta fixes. This update brings one new feature to the Messenger function, and that is animated stickers for some of the categories — Pusheen, Beast and Anooki are listed — which has been the case on iOS devices for some time now, but stickers don't seem to be animating properly for us at the moment. A new feature for those using Facebook Home is the ability to control music playback on the lock screen.
Also included is a fix for a bug that caused album covers to show rather than a specific photo you tapped, as well as a bug that crashed the app when viewing photos in full screen mode. Naturally, various bug fixes and speed improvements were made as well.
If you haven't joined the "Facebook for Android Beta Testers" group, information can be found on the official Facebook page on how to join. Those wishing to stay on the regular track and wait for the more stable updates should see these improvements trickle down soon enough.