when is rainbow six siege new season

The new Rainbow Six Siege season, Year 10 Season 3 called Operation High Stakes, will be released on September 2, 2025. This season was revealed on August 17, 2025, and includes a new defender named Denari, modernized maps (Lair, Nighthaven Labs, and Consulate), and several gameplay and esports updates. Players will be able to try the new features on the test server starting August 18, 2025, before the full release on September 2, 2025.