Post-Update Report: Mario Kart 8 Deluxe – Version 3.0.3

Date of Report: April 12, 2026
Game: Mario Kart 8 Deluxe (Nintendo Switch)
Previous Version: 3.0.2
New Version: 3.0.3
Release Date (Retrospective): December 2024 (final update for Booster Course Pass wave 6)

3. The Data-Mined Secrets (What Nintendo Didn't Tell You)

While the official notes are dry, dataminers who dissected the 3.0.3 binary code discovered a few hidden gems. According to the community at Mario Kart Central and OatmealDome (a renowned Switch dataminer):

Impact on Gameplay

: Added the final wave of courses and characters like Funky Kong and Pauline. Version 3.0.1

Compatibility: This update maintains the "Booster Course Pass" features and custom item rules established in version 3.0.0. Verdict

Mario Kart 8 Deluxe Update 3.0.3: Security, Stability, and the Final Polish