If Nintendo of America and Europe are smart, and I hope they are, they won't rush localization but will have it ready to take Zelda's spot as their big Wii U release for late fall/early winter in 2015.
The success of Mass Effect, Skyrim, Dragon Age and Bloodborne has shown with the right advertisements you can people to buy RPGs and if timed right, away from any other big multiplatform release that would look similar, it could be a big boon for Nintendo.