They'd better have voice overs this time. I can almost forgive Twilight Princess's bland text boxes and horrible synth soundtrack, because Gamecube had those crappy little discs that only held 1.5 GB. However, Wii uses 9 GB DVDs, so if there is no voice overs this time around it's pretty much inexcusable.
And I know that some zealot is going to run in here and say "Bububu teh tradition!", so to them I say that that would be like arguing against Zelda: OoT's 3D graphics because 2D graphics are a Zelda tradition. That's a lame argument, and it is only a weak excuse for why Zelda should continue to feel old and archaic even though standards for games have gotten much higher.
And to the others who would say "But I don't want Link to Talk!" I will say, stop trying to pretend that having voice overs means that Link would have to talk. There are plenty of games that have both voice overs and silent protagonists. In the Half-Life games, your character never utters a word even as other characters converse with him. In Knights of the Old Republic, your character technically talks, but you always choose what he / she says, and you never hear them actually speak it. The same can be said of Oblivion, where you get simple dialogue choices from a menu and then you only hear the other character's reaction. This is the worst excuse ever for why a Zelda game should have no voice overs, and yet it's probably the most frequently used by text zealots.
And lastly, there are some blokes who would say "reading text makes you use your imagination!" Well to that I would say, "If you want to use your imagination, read a book. Or better yet, write a book." Videogames are meant to capture our imaginations, not force us to use them on our own. They are a largely visual and audio experience, and without voice overs a dialogue-heavy game like Zelda feels incomplete. A high quality voice over can be the difference between actually connecting with characters in a game as real, living beings, and simply seeing them as a high-tech puppet show. I would rather hear a character speak and look into their eyes, than simply read a box full of text and occasionally catch a flailing limb with my peripheral vision. A game like Zelda is about immersion, and text boxes will always pull you out of the experience.