The official Capcom website for Super Street Fighter 4 was updated today, showcasing the second Ultras for many of the characters! Two of which I have not seen yet, C. Viper and Cammy's! C. Viper's looks amazing!
Thanks to Heart of Battle for uploading a couple more of the Ultras, although we've seen these in some of the earlier trailers.
NAKKY BLOG Update with Alternate Costumes - Still waiting for a translation.