https://www.gamespot.com/articles/gta-5-online-doomsday-heist-event-is-out-now/1100-6455579/

The latest free update for Grand Theft Auto V's GTA Online mode is now available. Beginning today, December 12, PC, PS4, and Xbox One players can all take on The Doomsday Heist, a brand-new online heist for GTA Online and the biggest piece of content Rockstar has rolled out for the mode to date.

Rockstar describes The Doomsday Heist as a "massive new adventure" in which players will team up to thwart "a plan so diabolical it could end life as we know it." The heist spans three acts, each of which "involves negotiating multiple ruthless Freemode prep missions, tactical setup operations, and experimental weapons and vehicles." Rockstar says that all three acts of The Doomsday Heist end in an "over-the-top finale" that will net you a hefty payoff.