Nintendo have updated the official Legend of Zelda: Skyward Sword website in Japan with new videos of two more areas from the game. Below, you can watch footage of Lake Floria and the Ancient Cistern:
The golden statue in the Ancient Cistern is an ancient weapon meant to keep intruders out. The Cistern video also shows Link using his whip. It looks like you’ll be able to use it to swing across gaps and activate switches from a distance, just like in The Legend of Zelda: Spirit Tracks.