The Meitantei Conan Wii game will be released in North America and Europe.
The North American release of the game will be distributed by Electronic Arts while the European release will distributed by Nobilis
The game was originally released in Japan in 2007 as “Meitantei Konan: Tsuioku no Gensou -Mirage of the Reminiscence -” 『名探偵コナン 追憶の幻想(ミラージュ)』

North America:
Case Closed -One Truth Prevails-: The Mirapolis Investigation (Sometime 2009)
U.K:
Case Closed -One Truth Prevails-: The Mirapolis Investigation (February 2009)
France:
Detective Conan: Enquête à Mirapolis (2009/01/31)
Italy:
Detective Conan: Il caso Mirapolis (2009/02/06)
Spain:
Detective Conan La Investigacion De Mirapolis (2008 November)
Germany:
Detektiv Conan – Die Mirapolis-Ermittlung (2009/01/29)
The European release of the game includes English & Japanese Audio tracks. The game text is available in English, French, Italian, Spanish and Dutch.
Something confusing is the cover released in the official web site is different than the cover shown in the Nobilis site and fan sites!
*Note: The game release dates are from the official web site, fan sites, Amazon and various shopping sites cited below. Various sources including the official web site did not mention the date in specific, and various shopping sites and fan sites reported different release dates.
Video: Trailers & Gameplay
Video: Nobilis Detective Conan Wii Event
Official links:
Official “Detective Conan: The Mirapolis Investigation” European web site
http://www.detectiveconan-thegame.com/
Official Japanese web site:
http://www.mmv.co.jp/special/game/wii/conan/
Nobilis
http://www.nobilis-france.com/index_en.html
Fan sites & Online stores:
Geek Inc: Detective Conan : Enquête à Mirapolis (French)
http://www.geekinc.fr/2009/01/14/detective-conan-enquete-a-mirapolis
Adventruegameshop:Detective Conan: Il Caso Mirapolis (Nintendo Wii) (Italian)
http://www.adventuregameshop.com/product_info.php?products_id=602&osCsid=50ab474c9572bf4c02809
日本語