Nintendo released bullshots of Skyward Sword (as in, much higher res + AA) when it was released, so I'm assuming these are bullshots too.Those are from a different thread but unless Nintendo started releasing bullshots I'd say it's still possible they are from the NX version. 60fps Zelda has been limited to LinkBetweenWorlds and Triforce Heroes but bringing a 30fps game to 60fps doesn't mean all the animations need to be remade at 60fps. The game's engine can handle the doubling of certain animation frames automatically. Sure everything wouldn't be actually 60fps but the game itself would be and would feel smoother and more responsive. It just wouldn't look much smoother without actually adding more frames to the animations.
Again, making stuff up