A renowned leaker "The Preacher" on GTA forums posted this in the GTA 6 speculation thread:
GTAVI.com also no longer redirects to Rockstar Games and was updated yesterday:
March announcement
September release date
July delay announcement
December revised release
November another delay announcement
March 2021 actual release
[Poll] GTA VI Release Date Predictions
gtaforums.com
GTAVI.com also no longer redirects to Rockstar Games and was updated yesterday: