The first official expansion for Diablo 4, known as Vessel of Hatred is set to release in late 2024. Blizzard is also introducing a new character that has never been seen in the series before, but there are some speculations.
In Vessel of Hatred, players will explore Diablo 2’s jungle world, Nahantu, and confront Mephisto, the Prime Evil who abducted our comrade following the events of the base game. Blizzard has stated that the main storyline of Diablo 4 will only progress through major expansions, not seasonal updates. At the BlizzCon 2023 Diablo Campfire Chat, developers disclosed that players will be offered the option to either progress through the main campaign or directly access the Vessel of Hatred campaign. Furthermore, players will have the opportunity to explore the Docks of Kurast, which serves as the primary city hub in Act 3 of Diablo 2
Diablo 4 is introducing not just a new character class but a class that has never been seen in the series before. Yet, a creator named YbuBaKa might have discovered the class’s type from a datamine a few weeks back. There’s speculation about this new class, called “Spiritborn,” which has a nature-themed focus and wields a glaive. It’s uncertain whether this glaive is meant for close combat or throwing, but considering the limited ranged options in the game currently, a throwing glaive seems more likely. It’s also possible that the class name might change in the future. The datamine came very close to guessing the DLC name, suggesting it would be “Lord of Hatred” rather than “Vessel of Hatred.”
Blizzard seems to be trying out new classes instead of revisiting old ones, like when they added the new Blood Knight class in Diablo Immortal. There are also rumors from dataminers that this expansion might bring back the mercenary system for hiring and leveling followers, and it could also introduce a raid as a fresh endgame activity, offering big rewards and multiple wings.