Quick bit of news for you: during Ubisoft Forward, it was announced that Rainbow Six Siege is coming to next-gen systems.
Rainbow Six Siege will be released for PlayStation 5 and Xbox Series this year.
You can expect the game to cost the same as the current price, and all current players will receive the next-gen version of the game for no additional cost.
You will also be able to keep your in-game content and progression. You will also be able to play across both consoles in the same family of systems.
It will also display in 4K resolution and run at 120 fps with render scaling (thanks, Gematsu).