Hopefully, this will be placed in the correct forum...
ポケパーク Wii: ピカチュウの大冒険 (PokePaku Wii: Pikachu no Daibouken) will be released outside of Japan under the English title "PokéPark Wii: Pikachu's Adventure." While it is still TBA on most fronts, it is being estimated (considering Nintendo's Pokemon track record) to be released sometime this summer (Possibly June or July). It has been graded by the OFLC (Office of Film and Literature Classification) as G.
Here is a Japanese trailer. You can find lots of videos of it on YouTube.
Edit: Nope. Wrong forum. Ugh. Can a mod please move this to here?