Eguchi 'sure' there will be a Metroid Wii U
http://www.gonintendo.com/viewstory.php?id=160744"I can't give you any details now, but I'm sure there will be a new Metroid release making use of the new controller, not just to control Samus and her ship but also to give the player a new source of information. Maybe the player is looking at the screen but has the information that they need to defeat the enemy in their hands. You could look through the screen and scan your enemy and find where it's weakspot is." - Nintendo's Katsuya Eguchi