Nintendo could release Mario Kart 8 in bundle form, if a report on gameblog.fr is accurate. The site states anonymous sources claim a 32GB Black Wii U will be released with a copy of the game along with a seven-day trial to Wii Karaoke U. The site even posted supposed box art for the bundle. We’ll send Nintendo a mail. Mario Kart 8 releases on Wii U May 30. Thanks, Nintendo Life.