Some details from Kotaku:
- The games full title is "Marvel Vs. Capcom 3: Fate of Two Worlds"
- The title will likely feature more than 30 characters to choose from and feature 3-on-3 tag team fighting.
- Hits the Playstation 3 and Xbox 360 in spring 2011.
- There currently are no plans for an arcade, computer or Wii version of the title.
- At least 100 pieces including remixes of favorites from previous Marvel Vs. Capcom games as well as some new music.
- The trailer hints, according to Kotaku, that Captain America, Super Skrull, Chun-Li, Deadpool, Felicia, Dante or Nero, Spencer or Wesker, Mephisto, Rad Spencer and Doctor Doom are in.
- The game will have a strong storyline.
Source.
Kotaku have some guesses on who the shadows belong to:
Source.