Like everyone else, Facebook is going Retina.
What’s New in Version 4.1.1
In this release, we added some features and fixed some bugs so now: – You can go offline in chat – The right profile picture appears for everyone – Your list of friends always includes all your friends – In sets of photos, your name is displayed correctly – Photos of people who like Facebook Pages load correctly – Your friend-request notification only lights up if you have a request – You can change your language to Czech, Danish, Greek, Indonesian, Malaysian, Norwegian (Bokmal), Portuguese (Portugal) or Thai – If you’ve got a new Retina iPad, you’ll see a crisp, high resolution interface