You're more likely to see Xbox Live and PSN get a sequel of Tatsunoko vs. Capcom: Ultimate All Stars than a port of the original, says a Capcom producer.
That's because "the game is optimized for the Wii system, especially the graphics features," Capcom's Ryota Niitsuma told VideoGamer.com. "So if we were to port it to PS3 or Xbox 360 we would have to make the game from scratch, and in that case we might as well just make a sequel of the series on those consoles rather than porting it."
Note: That does not confirm either that a sequel is being made, or that anything in the franchise is being made for XBLA or PSN. Niitsuma's just sayin'. "Currently, no," is the answer to "will TvC be released on 360 or PS3." But, "We would like to see the reaction of the western market when we release the game on Wii."
Ah, yes, so that places 360 and PS3 gamers in the position of needing Wii gamers - to shell out in large numbers once Tatsunoko vs. Capcom releases in the winter. At least, those who have any hope of seeing this game on their console down the line.
Capcom: No plans for Tatsunoko vs. Capcom XBLA/PSN port [VideoGamer.com via Joystiq]