According to insider NateTheHate2, the PlayStation 5, Xbox Series X/S, and Switch 2 versions of Red Dead Redemption 2 “do exist”, although he has given no specific release date for them.
Released in 2018 on PS4 and Xbox One, then in 2019 on PC, Rockstar’s title has never received a major update for current consoles, unlike Grand Theft Auto V.
Rockstar has not confirmed anything at this time.