Ever since the Wii was released, all the game cases have been the standard white(except for New Super Mario Bros Wii, which was coloured red for a special occasion), well up until now. With the upcoming release of Nintendo/Sandlot's Zangeki no REGINLEIV, any mature rated Wii game will have a black case instead of white. Though unfortunately this only applies for Japan. Any game in Japan that receives a rating of CERO C and up will be given the black cases. Their CERO C ratings is pretty much our M rating, the next step is CERO D which is closest to our Ma15+ rating, etc.
What do you think? They'll definitely stand out against the white cased Wii counterparts. Let's hope these cases go global!