We all know Facebook's mobile apps are terrible. They're very slow, take ages to load, force close - just generally crap.
Facebook have been working for the last six months on a new version of the app for iPhone which has been built from scratch.
The new app has been built with iOS' SDK making it now a native app. The last one was created with HTML5. Because it's now native it makes the app a lot quicker and reliable.
Animations have also been sped up, giving the sense of speed. Photos also load a lot quicker and this is undoubtedly because some optimising on Facebook's end on their pictures.
These changes don't just apply to the iPhone though, the iPad has also been thrown into the mix.
Hopefully with this move Facebook will be able to give users a more pleasant experience on their mobile phones.