It ahs only been weeks since the release of the Wii and there are alredy rumrs of a HD-capable Wii. At an interview with Regie Fils Aime he said:
nintendo has already anounced a DVD playing Wii for Japan so could this mean a high definition Wii."tough choices about not including a DVD player at the start, tough choices about not including high-definition capability at the start."
Source: Nintendo Hinting at HD-capable Wii? - Gizmodo