MS will never announce a new AAA console exclusive IP from its studios. It's Gears, Forza, and Halo from now until the end of time. -_-
MS: We bought a bunch of new studios. Also, we'll be talking about XB2.
MS: Gears, Forza, Halo. Scarlett will be really powerful, and have an SSD.
They've only owned those new studios a year, what do you expect? It takes alot more than a year to build a AAA game. We already know the Initiative is working on a new AAA IP, and Playground's RPG studio is working on a AAA as well. Technically The Outer Worlds from Obsidian is AAA and MS owns the IP now. The first game in the series is multiplat because MS bought them after Obsidian had made a deal with Take-Two, but future games in the series will be Xbox exclusive, so technically that is a new AAA IP for MS assuming it sells well enough to get sequels.