What do you notice that is similar between the two screenshots? That's right, the bird statue. It may seem like a simple temple decoration, but I think it's much more than that. In fact, it may be our new saving system.
Why I think so:
-This statue only appears near the entrance and boss door of the dungeon, which are both sensible places to save your progress
-The neon parts of the statue also glow, as if indicating significance. This is unlike other decoration in the dungeon
-There is a picture of a bird on the statue, and there are wings on it which may connect it to the theme of the game
-It reminds me greatly of the owl saving statues in Majora's Mask
-The lack of a menu- seeing as your keys are displayed directly on the screen and your shields, potions and weapons being on different item wheels,-may suggest that you may have to save with an outer source
-Because Nintendo have been saying they want to change the common flow of Zelda games, saving in such a manner may add some difficulty yet still seems fun and corresponds with the game
If this is truly the saving system, then I am very intrigued and impressed by Nintendo. It just reminds me so much of the Owls in Majora's Mask, I just want to walk up and press "A" to save. I wonder why Nintendo didn't point this out though, although I believe that they didn't really need to as no one saves in a demo.