I was wondering about this as well.Out of curiosity:
What will be XB1's next retail console exclusive? Anything until Gears?
Cuphead has no box as far as I can see.
I think Crackdown is something like MP only this summer.
Recore is late 2016.
Halo Wars 2 is late 2016.
Forza Horizon 3 will probably be September.
That is all I can think of.
edit - Forgot Sea of Theives! Thanks Welfare!