Following on from yesterday's reveal that Ultimate Marvel vs. Capcom 3 would have a free downloadable mode called "Heroes and Heralds," which uses character cards to add abilities, the official trailer has now been posted by Capcom. Have a look:
While we saw Roll and eventually Mega Man X make appearances yesterday, today's version gives us a clearer look at some details. For instance, on the "Team Heralds" image near the start, we can see Zero in the back-left portion, between the hammer and sword (which is really fitting in a neat sort of way, were one to think about it). This does stand to reason, given we see him fight as a Herald in the same video, but we're just pointing it out.
There's nothing more to the video beyond the Legends background and Zero fighting (at least, where Mega Man fans might strictly be concerned), but the official press release on Capcom Unity's blog has a CG trailer and some new screens, including Roll and X's cards, as well as some for the Servbots and even Dr. Wily!