After all this time there is some news about the game. At least, there is if you speak German. The German DS version is already out, apparently, with the Wii version following on the 26th March. You can take a look at the website here. There is an English version of the site, but some of the links connect to the German links.
I’m always a bit baffled that in this day and age a company doesn’t take advantage of international awareness through the internet and do a simultanous launch.