As of my knowledge cutoff date of September 2021, Rockstar Games has not officially announced a release date for Grand Theft Auto 6. There have been many rumors and speculations surrounding the game's release date, but Rockstar Games has not confirmed any of them.

It is worth noting that game development is a complex process, and it can take several years to create a high-quality game like Grand Theft Auto 6. Rockstar Games has a history of taking their time to develop their games to ensure that they meet the high expectations of their fans. Therefore, it is not unusual for there to be a significant gap between the release of new Grand Theft Auto games.