I'm curious as to what is that weird glowing gear behind Zelda in one of the more recent trailers. Ghirahim's dungeon perhaps. Hopefully we get to face Ghirahim several times throughout the game like King Bulbin.
Also, I think you may need to hit Ghirahim atop of the boss statue's head, but...
Maybe it's gonna revolve around the Ocarina of time. 0_0
Come on, of course it will revolve around the Skyward Sword as it is the title of the game.
I'm also thinking that it will revolve around the sky, maybe.