Speaking of Zelda, some of you brought up earlier that the cut content from Wind Waker likely showed up in altered form in Twilight Princess.
However, recalling this:
http://www.eurogamer.net/articles/news250705zelda I don't think they would put out the Wind Waker simply as-is without doing any work to address their own criticisms of the game. Aonuma even had the UI for OoT 3D retooled to improve navigation in the Water Dungeon, again, fixing a major issue of the original.
At the very least, we can assume the Triforce Hunt has been retooled. And someone suggested that a Boss Rush mode has been added to the game. Wind Waker also has a New Game Plus mode in the original game where not much is changed other than your outfit, that you can read the Hylian language and that you start out with the PictoBox DX. I hope they maybe tweak the difficulty to make it a little harder or at least up the damage output from enemies and reduce support item drops like in Skyward Sword's Hero Mode.
If something happens in the dungeon department probably depends entirely on how much time they had with this updated version. I would hope they either added original designs of the ones left out or retooled the existing ones for the NG+ mode.
All we can say for sure is that they WILL be adding something. Every re-release of a prior game has had new content of some form. Mostly it was one entirely new dungeon.