Mario Kart Booster Course Pass had a leak it'd appear. Major because of the date 2/6/23 (before Direct with Birdo or wave 4 trailer)
Seems we're getting King Bob-omb, Petey Piranha, Hammer Bro, Chargin Chuck, Monty Mole, Diddy, Dixie, Funky, SNES Mario, Kamek, Pauline and Nabbit