FaceTime has never and will never be a feature of AT&T's network. It isn't a feature of A&T at all. That's what the problem is. Is Google a feature of AT&T's too? How about Pandora?
What if from here on out you couldn't get to websites brought online after this date because "they weren't there before so you aren't losing anything"? Something tells me you haven't a clue how this stuff works.
+1bazillion.