The Marvel vs. Capcom 3 listing on British retailer ShopTo's site give the indication that Akuma will be featured among the Capcom roster in the game. As far as early accidental reveals go, this one's pretty clear, with very official character art (and even a helpful "Akuma" label). We know: huge surprise that Akuma would appear in a Capcom fighting game.

As we always do when a new MvC3 character is discovered, we checked the rumored "leaked" roster we posted in November. Akuma's not there! Given the authentic look of that character art, consider this a mark against the veracity of that list -- or at least evidence that said list is not final.

[Thanks, revengez]