I'm not too confident. Last year they showed off titles that are coming either next year or even later like Scalebound, Quantum Break, Crackdown, Phantom Dust. I guess they will show those again with gameplay footage this time around.
I expect only 2 new AAA games to be announced: new Rare game and Gears 4.
So that would make MS E3 look like this:
Halo 5
Forza 6
Quantum Break
Tomb Raider
Scalebound
Crackdown
Gears 4
Phantom Dust (maybe too early now with the new studio?)
Rare game
+ indie games