Launching some time in November 2018, ostensibly as a Public Beta, Red Dead Online is the free multiplayer component of Red Dead Redemption 2.

We know next to nothing about it so far. The most concrete details we have concern the bonus content included with the Ultimate Edition of the game:

Beyond that, Rockstar have said that they want to take inspiration from the best content updates for GTA Online, specifically mentioning Heists, Gunrunning, The Doomsday Heist, and After Hours.

They've said that their key goals are keeping the player base together, and that they want it to feel like a Rockstar experience, combining personality, gameplay, style, narrative and variety.