No. But [maybe] Monday.
The game was apparently shown to members of the press behind closed doors at the Tokyo Game Show, but Capcom isn't making it official just yet.
But, you can take this post as confirmation as Capcom is saying that Super Street Fighter 4 exists and an announcement is coming very soon.
Update: A reader also pointed out this image from Gamepro Germany. At first glance, it's just a shot of Yoshinori Ono with some other guy, but if you look a little closer in the background, you can see T. Hawk in his Street Fighter 4 form.
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