The announcement was buried at the bottom of a recent GTA Online community update.
"There is much more still to come, including ongoing weekly special events and bonuses, festive celebrations, gifts, surprises, as well as plans to bring the much-requested PlayStation 5 and Xbox Series X|S features of GTA Online to the PC platform in the new year. Please stay tuned to the Rockstar Games Newswire for details," notes the release.