After UMVC3 (which is now available digitally for ps4, and will be available on xbox and pc on March 2017) comes Marvel vs Capcom: Infinite, a 2 vs 2 fighting game.
The video trailer: 
revealed characters so far:
Megman X
Iron Man
Ryu
Captain Marvel
Captain America
Morrigan
There is a rumor that X-men may just be DLCs but it's not confirmed yet.
So we have to participate on polls ( because they consider those who are most requested ) so that if Storm's votes are higher , then she will be guaranteed a DLC.
So please vote for her here: https://docs.google.com/forms/d/1ujqHAsHoZbwpNMt6amW23lb_IGNzUUZmrqAfRKKoaXI/viewform?edit_requested=true
and here too: