Mario Kart racers just learned that Wave 2 of the Booster Course DLC is coming to Mario Kart 8 Deluxe very soon. But that isn’t all the Mario Kart 8 Deluxe community has learned this past week. Earlier this year, Twitter user fishguy6564 “cracked” the Booster Course DLC when it was first announced, granting an early glimpse at other tracks that may come in future waves. At the time, many gamers were quite skeptical. They didn’t feel the tracks in the leak were varied enough and even questioned if it was “too easy” for fishguy to get such information. But now, it appears that fishguy may have b…