Nintendo's really pushing that Wii version, aren't they? According to Famitsu, Nintendo is only going to offer the Gamecube version of The Legend of Zelda: Twilight Princess through online order in Japan, leading Digital Battle to speculate:
"The main reason for Nintendo to do this is to avoid both versions of the game in stores at the same time. Because of the Wii launch, they would much rather see the Wii Zelda sell than the GameCube version, and that wouldn't be a guarantee if the two versions are on the same shelf. There is no information on whether this will be the same procedure in Europe and US"