Overview
- Nintendo released the free Version 4.0.0 update Wednesday, September 2, 2026, officially adding Nintendo Switch 2 display support with higher resolution and shorter race load times.
- The patch enables local split‑screen for five to eight players on a single Switch 2 display, but at least one Joy‑Con 2 or a Switch 2 Pro Controller is required because the console can only pair seven original Switch controllers.
- CameraPlay support was added so players with a separate USB camera can show their faces in two‑to‑four player local matches and in online GameChat sessions where camera and microphone data are shared only with GameChat members.
- The update also includes small gameplay changes that apply to all Switch systems, including a slight global speed increase described as the equivalent of one coin and a Boo item tweak that stops it from slowing players when invisible and offroad.
- By upgrading Mario Kart 8 Deluxe for Switch 2 and adding a new '96 Races' VS option for Booster Course Pass owners, Nintendo has extended long‑term support for its best‑selling title and given players a new local social feature that could reshape group play and party setups.