If you are looking for the latest performance and stability data for your copy of the game, What’s New in Version 3.0.3?
The primary focus of version 3.0.3 was a behind-the-scenes security reinforcement rather than new content.
: For those hunting for new characters or track buffs, take note: this version contains no changes to graphics, sound, or the current character/kart balance meta. Why This Update Matters for Players