Fascinating. With that, I think I ought to avoid any further details about the game. Must go in blank slate.

A simultaneous worldwide release is good news. Nintendo rarely does that, but this is the kind of game that needs it.

I think my head is going to internally combust.

Things have changed a bit though. This was recently said in Iwata Asks:

Can we get a second confirmation that it's releasing in North America? Can never be sure with Nintendo games these days...

Getting stuck usually has stuck with me as bad memories.  Like I remember it as "that bullshit game where I get stuck on this stupid impossible part".  A feeling of accomplishment is probably a better way to look at it.  You don't want a game to be frustratingly hard but you do want some sense of danger to provide a thrill and some challenge to provide a rewarding feeling.

With Zelda it's usually some part where I got this item and finally got to explore a certain area that sticks with me the most.  Or some foreshadowing that later paid off.  In LttP I think of Blind the Thief because he gets name dropped WAY at the beginning of the game and the weird dude with the sign because it takes a while until you can solve it so the whole time I was thinking "I wonder what I need to do to interact with that sign guy."

http://i51.tinypic.com/2n6ga4g.gif

I actually have that game.

No way! The Zelda DS games are the hardest games I've ever played.

I don't see how this will be more accessible to the casual market if the entire overworld is a giant puzzle. From my experience, people tend to give up on Zelda when they get stuck in a dungeon puzzle, and if even the overworld is now this way as Miyamoto has mentioned (say goodbye to taking a break from dungeons to just explore the overworld?), won't that be a barrier of entry? Unless they implement some kind of super guide or hint system like in Ocarina of Time 3D.

You can have the whole thing being puzzles but just light puzzles.

You just answered your own question.  Like with NSMBW, Galaxy 2 and DKCR, the Super Guide is whats allowing Nintendo to start making their mainstream series more challenging again since they're giving less experienced gamers a way to skip difficult parts so they can keep playing instead of quitting because they got stuck.

From what I've heard, though, Ocarina of Time's 3DS version has a pretty poor implementation of the Super Guide.  I don't see someone just up and leaving a dungeon and running back to Kokiri Village or the Temple of Time for the solution just because they got stuck in a room.  If that's the sort of thing they're putting in Skyward Sword, they might as well not have it at all.

Personally, I don't give a damn anymore if the casuals have issues playing this game.  After all these years of the Wii, I'm sick of hearing about how these people "have it so hard" learning to play modern games.  When I was five, I learned how to play more cryptic and punishing games than we make today, so frankly today's casuals have it pretty frickin' easy by comparison.  I am troubled on this issue of the Overworld being "one big puzzle" because of the repercussions on exploration, though.  I'm concerned it'll make the world feel very contrived and hamper player freedom/feel of discovery.

Ocarina of Time 3DS was a quickly made graphically enhanced port that was outsourced to a third party developer to make.  I'd imagine that a brand new Zelda made by the main team at Nintendo, who's had the last 100 years to make it, will have it implemented much better.

I'm actually on the opposite side of that spectrum.  I think it will actually drive me to explore and give me a feel of accomplishment.  Especially if the give me carrots like the Lore entries in Metroid Prime Series.  I went through and got most of the scan entries.  What I enjoyed most about the game.

I do think that statement though is a little misleading since we know already that Link can fly so it may amount to something you can do but totally optional since you can just hop on the bird and go.

OoT 3D's use of the Super Guide is amazing.