Update: The Captivate iron-embargo curtain has lifted and Marvel vs. Capcom 3: Fate of Two Worlds has been revealed. The US PlayStation blog has the first trailer.
The game will be released on PS3 and Xbox 360 in spring 2011.
Capcom's US blog has said the game will feature "wild, over-the-top gameplay" with aerial combos, hyper combos and fridge-freezer combos perhaps?
There's also three-on-three Tag Team fighting and a "living comic-book" art style, which apparently blurs the lines between 2D and 3D gameplay in a different way to Street Fighter IV.
Capcom is promising a strong storyline, according to Kotaku, and is aiming at around 30 playable fighters. Confirmed faces include Ryu, Wolverine, Iron Man, Hulk, Morrigan and Chris Redfield. Kotaku reckons promotional art hints at the inclusion of Chun-Li, Captain America, Super Skrull, Deadpool, Felicia, Dante, Frank West, Mephisto, Black Widow and Doctor Doom. Well spotted.