Legend of Zelda: Skyward Sword HD is a Possibility
In an interview with IGN, Legend of Zelda producer Eiji Aonouma stated that there's a possibility of revisiting the Wii's Legend of Zelda: Skyward Sword.
“Yeah it's definitely possible. As I mentioned earlier in the presentation, The Legend of Zelda: Breath of the Wild is a result of what we wanted to expand and make a better Skyward Sword. It's like an evolved or expanded version.”
Putting out an HD version of Skyward Sword and tossing that into the mix might be a little weird. It's always a possibility, so I really don't know."
I personally never had the chance to play Skyward Sword due to lacking the necessary Wii MotionPlus attachment. Fortunately that's built into the standard Wii U controller, so that would no longer be an exclusionary element.
This is purely speculation, but perhaps they would outright give you the option to turn motion control off, and just play with the Wii U gamepad. While the motion control is what made the game unique and interesting, permitting users to swing Link's sword with surprising (and sometimes janky) accuracy, it's worth noting that the gamepad offers alternatives. One could perhaps use the second analog stick to wave the sword around. Or perhaps it could be controlled with swipes on the central screen.
Also, if he's saying Breath of the Wild is meant to be a better Skyward Sword, I'm wondering if we're going to get a similar dialogue system. Skyward Sword is unique in the franchise in that you get to see and choose Link's spoken lines (even if he doesn't have a voice actor for them). Perhaps we'll get another chatty protagonist?
Legend of Zelda: Breath of the Wild was announced at E3 last week. It will be playable on the Wii U and the NX.
If you want an example of what a HD version of Skyward Sword might look like, check out this video by thepixelpress showcasing it on Dolphin emulation.