These three languages match the primary spoken tongues across North America (United States, Canada, and Mexico). The game automatically detects the system language of the Wii U console and displays text and voice acting accordingly. -Rev 9- (Revision History)
This specific update was relatively minor, aimed at "adjustments for a more pleasant gaming experience," but it followed more significant updates that added fighters like Lucas, Roy, and Ryu. Key Contextual Updates Online Support April 8, 2024 Super Smash Bros. for Wii U -USA- -EnFrEs- -Rev 9-
: Mega Man, Pac-Man, Little Mac, Villager, Shulk, and Palutena. These three languages match the primary spoken tongues