http://www.eurogamer.net/articles/2013-03-20-deus-ex-human-revolution-directors-cut-for-wii-u-confirmed-and-yes-theyve-fixed-the-boss-battles

The directors cut of the game features improved graphics that weren't capable on PS3/360 (probably on PC though), fixed boss battles (they sucked apparently), AI improvements, game pad things, the DLC, and more.

Coming to Wii U, no plans for other systems at the moment.