Facebook just announced via its blog that an improved Facebook app for Android should be rolling out today. The updated app brings speed, improved photo interaction, and a better UI.
For starters, this update seems to be all about speed. Photos and albums are said to be two times faster than the current app, and photo sharing, comment viewing, and caption editing have all been improved.
The notification center has also been moved to the top of the screen so it's always visible, much like the desktop version of the site.