Microsoft has marketing on a major unannounced AAA game.

[LudicrousSpeed]

S.T.A.G.E. said:

Why cant the have marketing on their own exclusives. They could've already harmed the overall sales of Tomb Raider as it is. Microsoft needs a major exclusive because if they do not gain at least one major IP this gen, one would say they survived purely by third party.

MS does market their own games. Also, third parties sell the most on all platforms, except Nintendo of course. Microsoft has released plenty of their own games this gen.