Three entries related to multiplayer functionality have appeared in the PS5 backend data for "GTA6," but these interfaces do not yet prove that an online mode is included in the current files. Rockstar currently still describes the title as a single-player experience and has not officially announced an online mode.
The X account PlayStation Game Size, which tracks PlayStation Store backend data, stated that the relevant entries are "joinSession," "launchActivity," and "launchMultiplayerActivity." The account released this information on November 9, before pre-loading gradually became available, and later shared screenshots of the PS5 download queue showing "Story" listed as a separate component, sparking speculation that the online mode might be installed separately in the future.
The existing entries appear to be standard interfaces used by the PS5 system to directly access specific activities or friend sessions from the main menu. The publicly available materials do not showcase actual multiplayer content, so it cannot be concluded that an online mode is hidden within the current files. PlayStation Game Size previously estimated the game's size at 210GB, and Rockstar later confirmed that up to 212GB of space would be required, but this does not mean that other inferences made by that account have been officially verified.
Twitch CEO Dan Clancy stated that after discussing plans with Rockstar, he expects the multiplayer mode to launch in 2027. This timeline remains an expectation from external parties and is not an official announcement from Rockstar. Take-Two has confirmed that the existing "Grand Theft Auto Online" will continue to receive support after the new title's release.