As reported on Kotaku, based on alleged scans from the new Famitsu, as expected, Dudley, Makoto, and Ibuki are confirmed to be in Super Street Fighter IV.
Not a shocker, but just to keep up on it, ja, that's they. This is still in line with the supposed roster screen I've already relayed. Hakan should be next, likely to be announced or some images leaked in late March, I'd guess.
Let's see if I can get all this FPS out of my system before the end of April, 'cause I'll have some fighting to do.