Microsoft to have Unannounced AAA Exclusive at E3

According to this GamePlayer piece, Microsoft will have four behind closed doors demos at this year’s E3, one of which will probably be Halo 3: ODST. A source has told them that another of the demos behind closed doors is an unannounced AAA exclusive.

That mans it cannot be Mass Effect 2, Splinter Cell: Conviction, APB, or anything we know of already. New IP, perhaps?