Overview

• Invulnerability now only begins after 10 seconds of combat, with five‑second shields at two‑thirds and one‑third health valued at one‑third and two‑thirds of a boss’s life.
• Breaking a shield no longer re‑triggers invulnerability, allowing very powerful builds to finish encounters without forced pauses.
• Season of Infernal Chaos introduces Bartuc as a new boss and a strong source of Chaos Armor, with guaranteed drops in Torment III and IV.
• Blizzard says permanent additions include the reborn Infernal Hordes, Chaos Waves, Fell Council changes, Bartuc, new Uniques, and base offering adjustments.
• Strictly seasonal features include Chaos Perks, Chaos Rifts and related activities, Viz‑Jaq’taar reputation, and Chaos Armor, while reports note core itemization and the Reliquary pass remain unchanged for now.