A new trailer for Splatoon 3 has revealed that the game will release in Summer 2022, and will feature a new version of Salmon Run.
Splatoon 3' will be released in the summer of 2022, and there will also be a new salmon run next wave with the addition of new salmon and salmon roe. - GIGAZINE
Splatoon 3 Official Gameplay Trailer Nintendo Direct February 2022
Salmon Run Confirmed to Return in Splatoon 3
Splatoon 3 brings back Salmon Run this summer
Splatoon 3 Release Date Information Revealed
Splatoon 3 - Wikipedia