SAN FRANCISCO — December 3, 2019 — Today, Ubisoft announced that Operation Shifting Tides, the fourth and final season of Year 4 of Tom Clancy’s Rainbow Six® Siege, is now available for PlayStation®4 computer entertainment system, Xbox One and Windows PC, including UPLAY+, Ubisoft’s subscription service for Windows PC*. Operation Shifting Tides brings two new Operators, Kali from SAN FRANCISCO — December 3, 2019 — Today, Ubisoft announced that Operation Shifting Tides, the fourth and final season of Year 4 of Tom Clancy’s Rainbow Six® Siege, is now available for PlayStation®4 computer entertainment system, Xbox One and Windows PC, including UPLAY+, Ubisoft’s subscription service for Windows PC*. Operation Shifting Tides brings two new Operators, Kali from