From Nintendo Direct:

The Legend of Zelda: The Wind Waker HD: The classic Nintendo GameCube game has been enhanced with beautiful HD 1080p graphics. In one change from the original, the Tingle Tuner has been replaced by the Tingle Bottle, which uses the Wii U GamePad controller to post comments about the game to Miiverse. Comments from players wash up on the shores of beaches in the game. Players also have the option to sail faster than they did in the original version. The game is scheduled to launch in October 2013.

Unfortunately it is looking like the dungeons that were cut from the original are not going to be included, although the game looks even better than it did on the GameCube and it's a chance for newer players to play a great Zelda game.