"We will not be releasing a Wii U version of Madden NFL in 2013. However, we have a strong partnership with Nintendo and will continue to evaluate opportunities for delivering additional Madden NFL products for Nintendo fans in the future." - EA statement
I'm not a Madden player, but even I'm a bit upset with this. It speaks volumes for the lack of faith EA has in the Wii U, or 3DS, for that matter.