when is the new rainbow six siege season coming out

The new Rainbow Six Siege season, called Operation High Stakes (Year 10 Season 3), is coming out on September 2, 2025. The season was revealed on August 17, 2025, and includes a new defender named Denari, new weapons, and modernized maps such as Lair, Nighthaven Labs, and Consulate. Players can start testing new features on the test server from August 18, 2025, before the full release.