Nintendo has officially confirmed that Mario Kart 8's Booster Course Pass Wave 6 DLC will release on Thursday, November 9. Mario Kart 8 Deluxe is the Switch's best-selling game and has been an absolutely massive success for Nintendo. Nintendo has done a great job of keeping Mario Kart 8 fans engaged through paid DLC, with the Booster Course Pass adding a significant number of new courses, characters, and more to the beloved racing game.