Nintendo hat Update 4.0.0 für Mario Kart 8 Deluxe veröffentlicht, welches unter anderem Verbesserungen für Switch 2 ergänzt. Die englischen Patchnotes lesen sich so:

Support for the Nintendo Switch 2 system

• Added support for the Nintendo Switch 2 display and high-resolution TVs, allowing for clearer visuals.
• Shortened the loading time before races and battles begin.
• Added support for five to eight players in Multiplayer.
  • You can connect up to seven Nintendo Switch controllers (Joy-Con or Nintendo Switch Pro Controllers) to the Nintendo Switch 2 system. In order to play with eight people, you need at least one Joy-Con 2 controller or a Nintendo Switch 2 Pro Controller.
• Added CameraPlay support.
  • A USB camera (sold separately) is required to use CameraPlay.
  • Players can turn camera ON or OFF in Multiplayer (two to four players) and Online Play modes.
  • In order to use a camera on the internet, players must participate in a GameChat session. The camera footage and microphone audio will be sent only to GameChat members.
  • When the camera is ON, the player’s face is displayed during the race.

General

• Increased player speed during races by the equivalent of one coin.
• Players will not slow down while using Boo to become invisible, even when entering an offroad area.
• Players with access to the Mario Kart 8 Deluxe – Booster Course Pass will have “96 Races” added to the “VS Race” rule settings.