NOA sent out a press release concerning some of their 2008 titles, and they helpfully included a release date for the new Wii Wario Land platformer.  Wario Land: Shake It! will be released in the USA on September 29th of this year.

Wario Land™: Shake It!, a classic side-scroller for the Wii console launching Sept. 29, stars Wario, the smelly, bad-mannered alter ego of Mario™. With the Wii Remote™ controller turned sideways like an old-school controller, veterans and newcomers alike can run, jump and smash their way through hectic side-scrolling stages. Players shake the Wii Remote to help Wario take down his enemies, empty bags of treasure or cause earthquakes. Best of all, there are numerous stages each offering multiple missions to keep players coming back again and again to unlock everything, collect more coins or just improve their best times.

Source: Nintendo of America press release