Nintendo has confirmed that the eight new Mario Kart 8 Deluxe courses for Booster Course Pass Wave 3 are now live. You can either purchase the Mario Kart 8 Deluxe Booster Course Pass from the Nintendo Switch eShop or if you are subscribed to the higher tier Nintendo Switch Online + Expansion Pack you can get the tracks for free as part of your subscription. The new cups in Wave 3 are the Rock Cup and the Moon Cup, with four returning tracks for each cup. Nintendo has also said that a free update is available for Mario Kart 8 Deluxe which will allow you to choose custom items in offline races and some multiplayer races.