I wonder how far from the truth this speculation will be (and if it means MS really did a poor job of keeping their secrets in house again lol):
-Ryse
-Quantum Break
-Forza
-COD
-EA Sports Games
-Battlefield 4
-Titan
-Ubi Games (Watchdogs, Assassin's, etc.)
-New Fable?
-Mirror's Edge 2
-Dead Rising 3
-League of Legends
-New Banjo?
-New Killer Instinct?
-Hawken
-New Insomniac game?
-New Fallout?
-Halo Teaser?
-Black Tusk FPS Teaser?
Then add on the inevitable Kinect stuff like Sports, Exercise, Dance, and I'm sure some of the aforementioned games will have parts where you can use your hands and voice to interact with the game world for more "immersion".
All in all, there seems to be a ton of top quality games in development for XB1 from 3rd and 1st parties. Same goes for PS4. I don't think PS3/360 had this type launch and 1st year lineup that the new consoles will have. insane.