https://www.gamespot.com/articles/rainbow-six-siege-operation-para-bellum-update-is-/1100-6459476/

Rainbow Six Siege's Operation Para Bellum has begun, with a new update available for download that includes a new map, Villa, for all and two new defender operators, Alibi and Maestro, that are exclusive to season pass holders for a week. The DLC marks the launch of Siege's second season of their third year, and is one of the game's largest updates to date.

Both operators are members of the Italian G.I.S. and will automatically unlock for any players who have Siege's Year 3 pass. Alibi's Prisma ability allows her to create a holographic copy of herself in an idle position. When deployed outside, the attacking team will receive a false "Defender Outside" warning. Regardless of where the hologram is deployed, Alibi is immediately alerted when her double is attacked, and the attacker is briefly marked for the entire defending team to see.