"A collection of server logs have surfaced which purport to show usage of iPads running the yet-to-be-released iOS 6.0 and devices using ultra hi-res displays."
"Rumors of iOS 5.1 including native Facebook integration first surfaced in January when iMore found a contact field for your Facebook ID within the contacts app in iOS 5.1 beta 3. Now, we have come across some more evidence that should confirm this rumor."