Diablo 4 Season 15, dubbed "Season of Hell's Legacy," is set to release on September 15, 2026. The new season will shift focus from the previous Death Cult storyline to players hunting for unique items called Soul Splinters and rediscovering forgotten treasures from earlier entries in the Diablo series.
Release Time and Time Zones
The season will begin at 12:30 p.m. EDT on Tuesday, September 15. Players on the west coast of North America can begin at 9:30 a.m. PDT. Other regional release times include 1:30 p.m. BRT in Brazil, 5:30 p.m. BST in the U.K., 6:30 p.m. CEST in western Europe, 1:30 a.m. JST on September 16 in Japan, and 2:30 a.m. AEST on September 16 in eastern Australia.
New Season Features
Season of Hell's Legacy introduces Soul Splinters, a new type of socketable item that enhances equipment with unique effects beyond stat increases. For instance, the "Greater Splinter of the Black Soultone" offers a boost to all stats and a buff based on absorbed souls.
The seasonal questline will involve players confronting the Prime Evils. The content will task players with exploring locations such as Tristram Cathedral to face Diablo, the Arreat Summit for Baal, and the Durance of Hate for Mephisto. Defeating these bosses will yield modifiers and upgrades for use in players' War Plans.
Additionally, veteran players can look forward to the return of nine legacy Unique items. These include fan favorites like "Leoric's Crown," "Stone of Jordan," and "The Furnace," which Blizzard states will be immediately recognizable to long-time Diablo fans.