RuRo on 12 June 2014
Honestly I did wonder about this - in fact it was the first thing I was concerned about after seeing the 3DS version delayed and still no specific release date for the Wii U (even though they do now say "Holiday" rather than "Winter"). But I have to hope that it won't be delayed to 2015, since that would be disastrous for Nintendo. As far as I'm aware that would leave them with NO big Wii U game for the holiday period, and surely Nintendo can't screw things up that badly...
