I wish Aonuma had come out and specified whether or not this is a Wii U or 3DS Zelda. He was mentioning this in the same breath as Skyward Sword; so by default, I'd like to assume he meant a Wii U Zelda.
Of course, he may just be referring to this.
We really haven't had a sizable increase in the graphics department since Wind Waker. Once the Wii U Zelda releases (operating on the safe assumption that it's sometime during or, likely, after 2013), it will have been at least
a decade since that jump.
Gameplay did not really evolve in a meaningful way until
SS, so now I'm waiting for a graduation in the graphical and tutorial* departments.
*Relegate hand-holding to the beginning of the game, and leave it there.
SS had a HUD option for "experienced players", no? Give us the same option for tutorial elements as well.
You know what, just turn this into a full-blown difficulty meter.