Having just watched the new Street Fighter 4 'Epic' Trailer, I noticed it said to pre-order the game at the end of the trailer. It listed the Street Fighter website and GameStop. Interested, I went to the GameStop site and found two release dates:
Xbox 360: February 3, 2009
PlayStation 3: February 12, 2009
Obviously not confirmed, but it seems to me to be a starting window, as the trailer urged a Preorder, point to GameStop.
NOTE: After you hit the link, click either the X360 or PS3 link to see release dates
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