They'd be barmy to release in November! I know Halo CEA was only a remake but it didn't even hit top 10 in November NPD. ODST did really well in its September slot.
September - Halo 4
October - Fable: Journey
If a rare game is coming that isn't kinect it'll be August, if it's Kinect it'll be November.
Medal Of Honor is coming out in October again, right? I dunno, I think Microsoft would be confident enough in Halo 4 to release it in November. It would be an interesting sales battle though, for sure.