WIll they try to release it at least in the MIDDLE of the cycle for WiiU and NOT the end? I think the latter choice may have been a bit of a mistake for the game in Japan.
I don't think releasing SS at (or near) the end of wii's lifespan was a strategic decision. I think they would rather have released it sooner than later...I assume they released the game when it was ready, and they'll probably do the same thing again next time.
Somehow I think Nintendo are probably banking on other franchises to bring home the real bacon these days so they probably don't care how long it takes as long as it's good.