Yoshinori Ono just posted this picture on this Twitter, which is of course Chun-Li getting ready to rip out an Ultra 2. He also posted a small note:
All right , here we go, everybody ! Chun-Li's Ultra Combo was moving on Arcade board. Just give us a little more time!
The tweet is actually cut off, but I assume he meant "give us a little more time." Either way, sounds like the arcade version of Super Street fighter 4 is right around the corner!