The so-called is not an official version number from Nintendo (the last official patch is Ver. 3.0.3 as of late 2024), but rather the community term for the final wave of the Booster Course Pass (BCP) . This update, rolled out alongside Wave 6 (released in November 2023), added:

Officially, Mario Kart 8 Deluxe has received multiple version updates. The one community members call corresponds to Version 3.0.0 or 3.0.1 (depending on region and tracking method), released in November 2023 . This update was the final wave of the Booster Course Pass (Wave 6), adding:

Which of those would you like?

: The safest way to ensure compatibility for online play is through the official Nintendo Switch Support portal .

Here are some key points about Mario Kart 8 Deluxe:

: Specific amiibos (Metroid, Zelda, Kirby, Daisy) now unlock themed Mii racing suits. Major Gameplay and Balance Changes

Update 3.0 is the final, definitive version. Unlike earlier waves (1-5), Wave 6 includes the competitive Wii Rainbow Road and fixes the ultra-shortcut on Tour Madrid Drive . If you must acquire it via NSP/XCI, ensure you download the Booster Course Pass DLC unlocker separately – Update 3.0 alone only adds the patches, not the courses.