In October of last year, the internet newsmonger Henaki correctly identified the ten new characters arriving in Super Street Fighter 4. This was months before the final announcement of Hakan, and as Henaki's predictions became true his reputation as a major Capcom insider (or more correctly, a friend of multiple insiders) grew. Henaki's at it again with a second major announcement, and a third smaller announcement.
Marvel vs. Capcom 3 will be announced in May of this year. And Super Street Fighter 4 will have a PC version.
Apparently they've been working on this game at the playtesting level for close to a year. Personally, I find this news to be incredible, but I also hope that they rebuild the engine from the ground up, because some of the X-Men vs. Street Fighter and Darkstalkers 3 sprites in MvC2 look like ass. Cheers!
Source: http://teamspooky.com/content/?p=299
UPDATE: IT IS CONFIRMED
http://tinypic.com/player.php?v=161ixqw&s=5
OR
http://www.megaupload.com/?d=WFVWOK4H
cONFIRmed so far-
Marvel-
Ironman, Storm, Hulk, Spidey, Mag-fucking-neato
Capcom-
Ryu, ChunLi, Chris Redfield and Morrigan
More later on…
EDIT: Most info is from NeoGAF so if I'm wrong with some stuff it's because I was like fucking excited.
Also-
http://www.allgamesbeta.info/2010/04/marvel-vs-capcom-3-teaser-trailer.html
Deadpool and Captain America semi-confirmed?