As everyone else has already said, this is Zelda-lite so I won't go over that, surfice to say you can expect a tight well crafted game with the usual puzzles.
It looks great much better than I was expecting from what was originally an N64 development. And I really like the way the Starfox characters have almost been dropped into the wrong game, Fox McClouds character is at odds with the low-fi theme of the game but his remarks respond to this and for some reason I actually got into the story due to a tight script and good voice acting (give that shop keeper an oscar).
So while we wait for Zelda, this is a worthy filler and a perfect christmas game.