http://kotaku.com/yakuza-on-the-wii-u-is-an-experiment-and-not-happenin-510075724
Nagoshi also pointed out that the Yakuza series was born and breed on PlayStation hardware—which is something he hasn't forgotten. "It isn't jumping ship to Nintendo hardware," he added. "Yakuza 1 & 2 are coming out on the Wii U, and this is what it is."