Well, I find it to be a weird question. We don't even know what the Wii 2 is, if all it is is a Wii but better, then there is really no reason to play the Wii version.
Someone asked on another forum a similar question: would you get it on 3DS or Wii. It's a pretty retarded question for many reasons, but ignoring the fact that SS is entirely designed around WM+ (a pretty damn big thing to have to forget!), the answer is less obvious.
If it did, it'd be the next console, no doubt. Assuming the controls are identical (and I'd have to assume they would be since the game is so leveraged on motion control?), wouldn't the difference just be that the newer console version would be in HD?
well the Wii 2 will just be two Wiis duct-taped together with just enough RAM to do HD. haha. I wouldn't put it past Nintendo to do that(releasing both Zeldas for each system). But if there's totally new controls that'd be a lot of work for them to do both. I'd love to see release the game on time, then if they want re-release WW, TP, and/or SS for Wii 2 and if people want to buy them again then they can in HD.