We can only hope

“… the appearance of a full trailer suggests a 2024 release window is a distinct possibility. We’d maybe expect a Fall 2024/October 2024 release date at this point given that’s the next major anime release window after Spring 2024 and the usually pretty dry Summer 2024 window.”

https://www.gamesradar.com/one-punch-man-season-3-release-date-trailer-cast-monster-association/