Blizzard delayed Diablo 4's Season 15 launch on September 15, 2026, after players encountered widespread login errors (codes 3000008 and 3000006) and other technical issues. The season, centered on the franchise's 30th anniversary celebration and featuring new story quests with Deckard Cain and legacy unique items, will be rolled back pending resolution.
Diablo IV revealed its 30th anniversary plans at BlizzCon 2026, launching Season of Hell's Legacy on September 15, 2026, featuring the return of Deckard Cain, Prime Evil encounters, and legacy dungeons from previous games. The Amazon Class will arrive in the first half of 2027 as a paid Class Pack, designed around battle expertise, athleticism, and mythical magic with four distinct archetypes.