Some new details were leaked for Ultimate Marvel VS Capcom 3 according to Neogaf.
At the Tokyo Game Show these tidbits will be revealed:
A new build top tourney players helped with by digging deep for hours a day.
4 characters will be revealed: Phoenix Wright, Rocket Raccoon, Vergil and Iron Fist.
2 new stages, Danger Mode with Xmen Cameos and Outer Space (Space Battle)
New game modes will be revealed , a heavy emphasis on Spectator mode and its specifics.
Remaining modes,characters, and changes to single player, along with the MVC3 bonus for original players will be unveiled at New York Comic Con.
Vergil and Phoenix Wright were in the same character selection process where Mega Man X and Gene were in.
Capcom is waiting on sales figures for Ultimate Marvel VS Capcom 3 before DLC plans are considered.