Thanks for talking about Skyward Sword. This is something I find REALLY commendable. Nintendo is generally playing their characters pretty close and that has lacked development. Sure, Mario's adventures to save Peach often include the surrogate reward of "cake" when its all done, but just like Zelda games we never see anything progress. At the end of every adventure, Link rescues Zelda and puts the world to right, but we never really see what happens between the two of them. Hell, in "A Link to the Past" we get the idea that, Link puts the Golden Master Sword back in its stone in the middle of the Lost Woods and...goes back to doing whatever he was doing prior to the adventure's start.
Amazingly, prior to Skyward Sword the most blatant romance in the Zelda series has... been the TV show. Yes, between the "EXcuuuuuuse me Princess!" Link's kind of a bumbling horndog trying to get a kiss now and then, with Zelda often playing the tsundere role but occasionally indulging him...only to have something interrupt the "moment".
Sure, there have been undertones of romance for Link (not always with Zelda - consider the Zora princess!), especially in the OOT/Majora titles, WindWaker, GBA/DS games, and Twilight Princess, but though I've not had the chance to play Skyward Sword yet I'm really happy about this development, from what I've seen in promo videos.
I really like that they're moving beyond "Kid Link" and spending time on the late-teens early 20s variety. In Twilight Princess (and I am assuming, Skyward Sword) you really get the impression that Link is considered more of a mature, if young, adult. I'd personally like to see it taken farther. Show a mid 30s Link where he's the Captain of the Hylian Knights, Prince of Hyrule or some such...maybe he has a few kids with Zelda? Hell, maybe he's married to someone ELSE (went home with Malon or Saria after the adventure was over) and the adventure deals with him deciding if he's made the right choice on his life path... given the choice between saving Zelda, as Queen of the realm or his wife and kids, which will he choose? What happens to the other? Should he save Zelda, is it possible for romance to rekindle? I'm aware these are heavy themes for a Nintendo title, but nothing that hasn't been experienced peripherally in say, Majora's Mask. Even without such controversy, I agree with the above poster who wants to see an older, more mature Link with something personal to lose that sets him on his quest.
In any event, I applaud Skyward Sword for showing some development in this regard rather than keeping all the themes at arms length.