I think not - Nintendo will get more of their reliable big sellers out on WiiU before they start taking risks on Metroid - there's already Mario (both 2D and 3D), there's going to be SSB, MK, DK and some more Wii Series games out by the end of this year, give them a while for their other series and for them to repeat some of them.
I suspect if there is to be a Wii U Metroid game, it will be late 2015 or more likely, 2016 in my opinion - Metroid, though incredibly well-loved by fans, just isn't popular enough outside that dedicated group for it to receive priority









