I imagine it's a safe bet that their choices will all be past selections.

Hoping a past WiiWare selection or two appears. Didn't start redeeming my codes until fairly recently, so I've missed out on a few good deals like Fluidity and Excitebike: World Rally.

I wouldn't mind seeing Zelda II or Donkey Kong 3 appear for the Wii U, but surprisingly, neither has been offered before so I doubt that will change.