Christ, you people.
Voice acting has never been limited by the technology of the platform Nintendo is working on. Not since Majora's Mask, at any rate. Twilight Princess was less than 1.5GB, and Skyward Sword was less than 2GB (as I remember - even if it was 4GB, the point remains). Nothing is stopping Nintendo from using voice work except as a design choice.
The things that make Zelda great are not technological.
I expect that the Wii U version of Zelda will have very pretty graphics, though, and I look forward to that.







