I hope they add actual new content and not just a graphical overhaul, otherwise this will be disappointing, if there was any Zelda game that didn't need a graphical overhaul that title would be Wind Waker, game still looks gorgerous today (in my opinion better than the images they are showing today), and an HD port with proper widescreen would suffice.
If they're actually going back an adding new content to the game (which it desesperatly needs) and take time to re-work the overworld and sailing mechanics so it's actually interesting to travel on it however, I'll welcome this title.