Facebook announced the new Android app that runs in native code and not as a HTML5 web based app that it used to. By doing this it should run much faster and give them the ability to add more features that are part of the Android API. The app should load faster and run much smoother, I noticed that once images were loaded on my Galaxy Nexus scrolling thorough the time line was much easier. Also the images are loaded as you view them in the time line so they open right away and can be zoomed, liked or commented on right away without that annoying loading spinner. Also if you load a friend’s time line you should see a speed improvement.
I got it as an auto update when I got on WiFi but if you don’t have that on go get the update from the Play Store and you should be happy with the speed improvements of using native code.