Blizzard has released its 2025 roadmap for Diablo 4, outlining three new seasons that will introduce new seasonal powers, endgame activities, and crossovers with other Blizzard IPs. The game’s next season, Belial’s Return, is already known and will feature a major rework of the Lair Boss system.
Season 9, starting in July, will be Sins of the Horadrim, introducing new Nightmare dungeon activities and keyboard and mouse support for consoles. Season 10, between September and December, will bring updates to the Infernal Hordes endgame activity while also granting players new Chaos Powers.
The roadmap also teases two IP collabs with other Blizzard universes, although details are scarce. A gold and material-collecting pet system, introduced in Season 7, will continue through each seasonal journey.
Notably, a new expansion is confirmed for 2026, alongside a new ranking system and leaderboard. The exact nature of the expansion remains unknown but is expected to include a new class.
Season 8 has been delayed until April 29, with Blizzard decreasing XP gains at lower levels and increasing Torment difficulties to make it more challenging and slower than Season 7.
Source: https://www.gamespot.com/articles/diablo-4-2025-roadmap-highlights-new-crossovers-endgame-updates/1100-6530666