Source: NWiiZone.com ( they got it from Kotaku )Games made for Nintendo systems enjoy a broad variety of styles, genres and ratings. These are some of the reasons our Wii and Nintendo DS systems appeal to such a broad range of people. But as with books, television and movies, different content is meant for different audiences. Thatís why the ESRB provides ratings to help consumers understand the content of a game before they purchase it. As stated on Nintendo.com, Nintendo does not allow any AO-rated content on its systems.
Too bad... So the kiddie image will stay and will be correct.