Rainbow Six Siege : Operation Grim Sky اشنو تزاد ؟

Operation Grim Sky is the tenth expansion for Tom Clancy’s Rainbow Six Siege. It adds two new Operators, one from Delta Force and the other from MPS, that make up Rainbow’s Urban Tactical Response Team, codenamed Grim Sky.

It was officially announced on November 19, 2017 and is scheduled to be released on September 4, 2018.