The big factor here: No sword!
In fact, creator Shigeru Miyamoto remarked on it specifically with a knowing grin. Now, it doesn't necessarily mean that there is no Master Sword involved with this new story. That would be heinous. Think about it... motion control (better still: Wii Motion Plus) and no sword to swing? Yeah, right.
Speculation on various sites has pointed out that this mysterious elfin figure with Link has suggested that she(?) is the sword, perhaps transforming back and forth. Compare the charatcer design with the Master Sword on the right. I think they might be on to something! Time will tell.
I couldn't be more excited. Ok, yes, I can. The excitement will build and build and eventually, the disc will bring forth the adventure. (Of course, the Big N will make us wait for far too long...)
I spoke of my enthusiasm for The Legend of Zelda before, here where I first heard of the new tale/game and here, where I share some thoughts about the modern storytelling that is video games.
Eagerly, I await...