I can't find any website that announces that boxart, where'd you find it Battle Franky?
even if it did come from an Official Source, it could just be one of those Mock ups that are done for the Preorders. A lot of times its just a Blank Gamecube/PS2 cover with the logo on top of a Gradient or some other Generic background.
it would surprize me if this was the real game box. American Game Boxes are usually The Bland ones and Japanese Game boxes usually rock
Ironically, the Japanese cover is used on the "Greatest Hits" packaging on Budokai 3.