It wouldn't surprise me if, at some point a couple years down the road or so, when it's cheap, they released an updated version of the Wii with a faster GPU capable of doing those HD resolutions.
But as for the current Wii hardware goes, some news site claimed to talk to someone inside Nintendo who said the current hardware could output that res, (Though he seemed to imply it would require a change to the hardware?) but it would run choppy, so it doesn't.
But as for the current Wii hardware goes, some news site claimed to talk to someone inside Nintendo who said the current hardware could output that res, (Though he seemed to imply it would require a change to the hardware?) but it would run choppy, so it doesn't.