Ultimate Marvel vs Capcom 3-  For those that went out and  purchased Marvel vs. Capcom 3: Fate of Two Worlds and have played it to  the point of insanity—and there are plenty of you out there—there’s some  good news and bad.  The good news is that Capcom  is working on 12 new characters, 8 new stages, and some technical  refinements to both the fighting and the online side, including the  introduction of a spectator mode to watch fights with other gamers. 
All  together this will push the total characters to 50 (including the  downloadable characters).
The bad news is that these  additions will not be available online as DLC, rather they will be part  of the new retail package that will be released in November for $39.99.   But if you didn’t originally purchase the original Marvel vs. Capcom 3,  or if you play the game enough that another $40 won’t bother you, then  huzah!
So far Capcom has only released the names of four of the 12 characters: Capcom’s Strider and Firebrand (from Ghosts ‘n Goblins), and Marvel’s Hawkeye and Ghost Rider.   So who are the other eight characters? Will we have to wait weeks or  months as Capcom slowly unveils each new character leading up to the  release in November?  No, of course not.  This is the internet, so  naturally all eight characters have been leaked.
Read more: Yahoo 
