During this weekend's Japan Expo, Namco Tales Studio director Makoto Yoshizumi told Kingdom of Tales that "there will be no Wii release." The explanation he gives sounds kind of odd, for a game originally released on Wii: "We wish to deliver the best and most complete experience for US and European fans, therefore we're localizing Tales of Graces f. The game on the PS3 version is on a blu-ray disc. It would be next to impossible to condense all the game's data on a Wii disc, so unfortunately, there will be no Wii release."
The statement isn't entirely unfounded: the PS3 version includes a new playable chapter not found in the Wii original, with a voice-acted script reportedly 3/4 the length of the original game's. The desire for the "best and most complete experience" likely refers to that extra content, thus explaining why the original Wii version is being skipped.