Yeah, there are some pretty notable spoilers in the Skyward Sword portion of that video.
That town looks really neat.
Also, new character has a familiar symbol upon his or her stomach.
The Shekiah eye, i also think i saw what could have been a Skyward swordised version of the mirror of twilight in the 4 min gameplay sequence. Are we getting the back story of TP in this game? i'm not sure how i feel about that, on one hand i disliked the story of TP itself, but that was mainly because i felt it was told rather poorly and G-dorfs appearance kinda ruined it. The Twili i found to be interesting and i thought the back story was somewhat interesting. It has been speculated that the shekiah and Twili are related...perhaps this game will say how...