The first season, titled "Operation Chimera", will add two biohazard specialists from France and Russian Federation that are playable across the usual multiplayer modes, but it's the new co-op mode that will be of interest to long serving fans of the game.
I remember writing last year (around the same time, no less) that Rainbow Six Siege would be getting a second year of DLC. Little is known beyond its co-op nature, with the tease suggesting a potential new threat for players to deal with beyond the standard versus or AI terrorists along with special cosmetic items to collect. Full details will be announced in February 2018 during the Six Invitational.
Year three of Rainbow Six: Siege will add more than just a temporary new mode.
The season pass will be available to buy from December 12.
And it looks like it could be a Zombie mode, with it tied to the biohazard and quarantine theme of year 3 season one - Operation Chimera.
As well as eight new operators, the third year includes two new maps set in Italy and Morocco and a make over of an existing map, giving it new design and art direction.
There are two new French and Russian biohazard specialist operators coming with it, Eurogamer reported.
As with the previous two years, Year 3 will include four seasons of new content throughout 2018.
Tom Clancy's Rainbow Six Siege is still flourishing and growing, proving that innovative competitive multiplayer gameplay can grow and succeed without pay-to-win microtransactions or real-money loot boxes. We followed up with Ubisoft to see if this mode is only available for the four weeks or if it becomes a paid-for expansion after and were told that it will "only be available" for that 4-week window.