https://www.gamespot.com/articles/watch-rainbow-six-siege-outbreaks-opening-sequence/1100-6456895/

Rainbow Six Siege has enjoyed an incredible comeback, as Ubisoft's strong support for the game has not only kept players coming back but actually increased the size of its player base over time in a way we rarely see. That support will continue in the upcoming Year 3 of Siege, with two new Operators set to shake up the game's meta once again. But perhaps more exciting than the more traditional additions we're seeing in the Operation Chimera update is Outbreak, a limited-time PvE game mode.