Rockstar Games posted info regarding the Red Dead Redemption 2 multiplayer with the announcement of the Red Dead Online Beta.
Here are the rollout specifics:
-Tuesday, November 27th: All Red Dead Redemption 2: Ultimate Edition owners. Please note, players who purchased the physical Ultimate Edition must redeem the Ultimate Edition code in the packaging to be eligible.
-Wednesday, November 28th: All players who played Red Dead Redemption 2 on October 26th according to our data.
-Thursday, November 29th: All players who played Red Dead Redemption 2 between October 26th to –October 29th according to our data.
-Friday, November 30th: All players who own Red Dead Redemption 2.