When Nintendo unveiled the Switch, Mario Kart made a brief appearance to show off the portable console’s split-screen capabilities. And today the company made it official: an updated version of the Wii U’s Mario Kart 8 — titled Mario Kart 8 Deluxe — is coming to the Switch on April 28th.Mario Kart 8 Deluxe is the follow-up to the Wii U’s Mario Kart 8. It brings a new maps, new characters from Splatoon, King Boo, Dry Bones and Bowser Jr., new Balloon Battle and Bob-omb Blast games modes, and new items, along with everything from Mario Kart 8, including all the DLC content. …