Skullwaker on 18 May 2015
Don't forget about 3DS games that will likely get localized such as The Great Ace Attorney, The Legend of Legacy, Rhythm Heaven: The Best Plus, Hatsune Miku: Project Mirai DX, Project X Zone 2, Yo-Kai Watch, Theatrhythm Dragon Quest and maybe even Dragon Quest VIII.
The Wii U isn't selling as well as the 3DS, but it has a great lineup as well and I believe it has bigger things to come.
