I'm excited for both, I love Wind Waker, but it did have a few problems, especially in the end of the story, I hope the HD remake will fix those. Wind Waker in some ways was made to be played with the Wii U controller. Also i hope this gives those who has not played the game yet a good opportunity to. Overall I do not see the need to have an HD remake but since it's here I'm excited and I hope it does well.
A Link Between Worlds seems to the one I'm much more interested in at the moment. It is a squeal, but it's a squeal to a much older game. I do not mind the turning into a painting "gimmick" it seems to add a new layer of game play that the 3DS is best to cater to. I love how very similar it looks and feels to the original game with out it being a carbon copy look wise. Overall I have a few worries about it but i really hope that it does well, it looks like it deserves it.
However, I'm way, way more excited for the Legend Of Zelda game for the Wii U, (not Wind Waker, the next one) After hearing reports and rumors about it, I have high hopes for it. With the power of the Wii U a lot could be done with it. While I really do like cel shaded games I want this one to be very realistic, it will really give the Wii U a chance to shine in that department. Also I hope that the story will become more vast and include a lot more characters with more depth and more importantly put a lot more at stake, more things need to be sacrifice and the challenges need to be more grand and yet more personal for Link. That's what Zelda games need to do to boost to the next level of gaming. But this is all just hopes and speculations on my end, feel free to agree or disagree with me, but I really hope for a huge expansive Zelda game for the Wii U.