Towards the end of the trailer (below), there's a brief sequence of Pac-Man giving chase to an 8-bit Mega Man.
While it's by no means a confirmation, some are speculating this might be a hint that Pac-Man and Mega Man will be bonus characters, maybe even playable. Not much to go off of, but I do see how one could think that. We'll see what happens.
Of course, what would a Capcom fighting game be without a Servbot cameo? An over-sized Servbot head makes an appearance during a bit of SFxT gameplay footage (55 second mark):
Likely many, many more Servbot cameos to come.
So, what do you make of this whole Pac-Man x Mega Man thing? A cute, innocent sequence or a hint of what's to come?
Credits: Brad, Krystian, Amir, The Mega Man Network