Sure, it took a decade but Capcom has officially announced a sequel to (in my opinion) the awesomest fighting game, ever. Marvel Vs. Capcom 3: Fate Of Two Worlds features the same 3 on 3 battles as the previous game and is scheduled for a spring 2011 release on both the PlayStation 3 and Xbox 360.
Confirmed characters (based on the video):
Marvel: Iron Man, Hulk, and Wolverine
Capcom: Chris Redfield, Morrigan, and Ryu
The full press release, below: