I'm sure they wont go for toon style. That is why they are making the Wind Waker remake.
I would hope nintendo to learn already that when they tease something, they have to deliver something like that or everyone will be disappointed. Anything less than the realistic Zelda we saw on the Wii U graphics demo will be disappointment. I am expecting disappointment on that front, but that doesnt mean i cant embrace the new Zelda. They are always good games.