Diablo 4 - Two expansion packs are on the way

Diablo series general manager Rod Fergusson has outlined the development plans of the Diablo 4 team in a new interview.

Diablo IV: Vessel of Hatred Expansion Announced at BlizzCon 2023

Blizzard is already working on two expansions for Diablo IV

Best Diablo 4 Barbarian builds for leveling, endgame & PvP in Season 2 - Dexerto

Diablo 4 has two expansions in development, Blizzard confirms

Blizzard Confirms Diablo 4 Will Get Annual Expansions

Blizzard explains why Diablo 4 post-launch seasons do not continue the campaign story

Classes - Diablo 4 Guide - IGN

Diablo III: Reaper of Souls - Wikipedia

Blizzard is already working on two expansions for Diablo IV

Diablo 4's Season 1 cosmetics won't be restricted to character classes

The case for a Diablo 3 expansion

Diablo 4 devs planning “really big update” for loot but there's a catch - Dexerto