Good news for owners of the latest iPad. An update to the Facebook app now provides iPad Retina Display support. The 4.1.1 update also includes some other fixes and features, such as the ability to go offline in chat, fixes to photo displays of friends, and some language additions for users outside the US.
The latest version of the app requires iOS 4.0 or greater, and it is universal so iPhone users will get an updated version as well.http://itunes.apple.com/us/app/facebook/id284882215?mt=8
The Facebook app also allows you to see what friends are near you if your iPhone or iPad is it is equipped with GPS capability. The app is 10.5 MB and is free.