Here’s a little treat about Splatoon and Splatoon 2 that you may not know. Both of these games saw multiple versions released for different regions. This was done to facilitate regional data deliveries regarding Splatfests, matchmaking and more. Computer miners have discovered that this will not be the case with Splatoon 3.
According to the productive data miner OatmealDome, Splatoon 3 will have a worldwide version. No matter where you get the game from or where you live, you get the same version of the game as everyone else. This should mean that you can buy DLC from any region and it will work with your copy of Splatoon 3, and it also means that your version can display all the languages in which the game is released. How this will affect regional Splatfests is still unknown.
Finally, if Nintendo continues to offer gear distribution codes in Splatoon 3, as they did with previous titles, codes from any region will unlock the related content in your game.