"Nintendo’s plan in Japan is to release at least one Play on Wii game every month. Mario Power Tennis is January’s game. After rounds of motion controlled Mario tennis Nintendo is putting Metroid Prime on the market. Japan is scheduled to get Wii de Asobu Metroid Prime on February 19 according to Nintendo’s updated release February calendar.
Nintendo of America has not announced a date for Play on Wii Metroid Prime, but we’ll get this game and the Wii-make of Metroid Prime 2 for sure. In the early summer, perhaps? It looks like there is a three month gap between regions."