It is Possible that you have already encountered a title such as" Grand Theft Auto 6 release date Merged", and it includes the date - March 20, 2020. This information allegedly came from a user gonnaenodaethat, who may be an employee of Rockstar North. However, as a rule, no screenshots or direct quotes are provided in publications.
Should I trust this information? This user was able to win the trust of many fans, as he predicted the content of the game a little earlier Red Dead Redemption 2, and a month before the official release. GTAForums are very strictly moderated. So that all the information that cannot be verified, is typically blocked, but with this user it did not happen.
Here is all the information about "draining the release date of Grand Theft Auto 6". So decide for yourself whether to trust such rumors or not. We can only wait for official news from Rockstar.