There will be no Facebook phone or Facebook operating system. But there will be a Facebook phone system that is tightly integrated into 2500 devices.
"The Facebook phone will offer a visual presentation of many different individuals' broadcasts and interactions among themselves," says ReadWriteWeb. "You may pick up your phone and see an update from your mother, followed by an update from your co-worker, but those two people might not ever know each other. They have their own view into the intersecting streams of personal updates and activities of the people they know."