Blizzard Entertainment has announced Season 10 of Diablo IV, titled Infernal Chaos, set to launch on 24 September (AEST/UTC+8).

The season introduces Bartuc, Lord of Chaos, as the new boss. Formerly the Warlord of Blood, Bartuc can be challenged during Infernal Hordes runs by players who earn sufficient Burning Aether, with Chaos Armor as a key reward.

Infernal Hordes has been reworked to feature Chaos Waves, escalating battles that culminate against The Fell Council, where one member becomes a Council Speaker with enhanced powers.

Other updates include Chaos Rifts appearing across Helltides and Nightmare Dungeons, offering rewards once sealed, as well as seasonal progression that unlocks Chaos Perks and allows unique Chaos Armor to roll at maximum power.

Season 10 marks a major update to endgame systems with new challenges, rewards, and class-specific builds shaping Sanctuary’s battles.