The Japanese version anyway. It's tough to find out if a game has actually released out there. I
did
some digging. Amazon.jp was no use since I
don't speak the language, and their "In English" feature seems to be useless.
However, I have dug up information from an import site that claims they've started shipping, so I guess the miracle
has happened. GT4 has actually started being sent out. It's a new years miracle!
Engadget
TUAW