NBA Jam 2004 will not be coming out on GameCube, according to the game's official website. The website, which was put up today, explains that the title is only for PlayStation 2 and Xbox. It is not confirmed that the title has been canned for GameCube, but this seems to be the only explanation. The game, which is being completely redesigned from scratch, was originally announced for all three next-generation consoles, but it now seems it will only appear on two. You can visit the site here.