Capcom has released more media for Zero and Condor Joe in Tatsunoko vs. Capcom Ultimate All-Stars. Mentioned in the press release is that these two guys are the final playable characters, bringing the total up to 25, with Yatterman No. 2 conspicuously missing.
Some readers are assuming that means she will be an unlockable character, but it's also possible she didn't make the final cut. Regardless, here's the stuff you may have seen on IGN earlier in the week, along with some new screen shots, including high resolution copies of Zero and Condor Joe's artwork.