Sega posted a jpg on their site that listed their Tokyo Game Show schedule. Too bad someone listed one of their biggest announcements on that image. Look below:
That image (without the arrows and smiley) has since been removed and happily replaced with this image below.
I guess a little of the excitement is gone since apparently the game is now confirmed. Only question remaining now is which system it's going to be on. All my votes go to the PS3. Especially since Sega went out of their way to fix that image.