announced a February 15, 2011 release date for Marvel vs Capcom 3: Fate of Two Worlds. Additionally, Shuma-Gorrath and Jill Valentine (in her RE5 outfit) were revealed as DLC characters. Codes for the DLC will be included in the game's special edition, and the actual downloads should be available in mid-March. It is safe to assume that these will not be the only DLC characters and that all of the DLC will be available to owners of the standard edition, albeit for a price.
The Special Edition version contains a bunch of stuff you probably don't need, but it does look nice. The cover of the steel case is actually the art from a poster given out at NY Comic Con (given out in a contest on this very site). The comic cover from NYCC (also a contest prize) actually becomes an entire prologue comic written by Frank Tieri.
Judging by the availability of DLC characters, we may be seeing new characters announced throughout the game's life. It might actually pay off to keep bugging Capcom for your favorite characters over time. February 15th is only the beginning.