Source: Blizzard Entertainment
Best answer: Right now, Blizzard has confirmed that the Barbarian, Druid, Sorceress and Rogue classes will be available at launch. There will be a total of five classes at launch but the last one hasn't been revealed yet.
What classes are available in Diablo 4?
Diablo 4 is the next mainline entry in the hack-and-slash RPG series from Blizzard Entertainment. Choosing a class is a staple feature of the series and Diablo 4 will be no exception. As of right now, Blizzard has confirmed that there will be five classes at launch. We know what four of the classes are: the Barbarian, Druid, Rogue and Sorceress.
The Barbarian uses a variety of weapons to smash and hack through foes, the Druid can shapeshift into forms like a werewolf, the Rogue uses agility and the Sorceress uses deadly magic like ice and fire. There is one more class remaining, although we don't know what it is at this time. We'll be sure to update you when we know more, including everything we know about the Diablo 4 skill system.
Will more classes be added later?
Diablo 2 launches with five classes and had another two added when its expansion, Lord of Destruction, was released. All seven of these classes are present in the upcoming Diablo 2: Resurrected remaster, which features cross-play. Diablo 3 launched with five classes, including the Barbarian, Demon Hunter, Monk, Witch Doctor, and Wizard. Two more classes, the Crusader and the Necromancer, were added with the Reaper of Souls expansion and the Rise of the Necromancer DLC pack, respectively. As such, there's definitely precedent for a couple of more classes to be added to Diablo 4 after it releases.
When will Diablo 4 be released?
Source: Blizzard Entertainment
Unfortunately, right now we don't have any idea when Diablo 4 is going to be released. During a panel at BlizzCon 2019, Blizzard stated that "We are not coming anytime soon, not even Blizzard soon." Whenever Diablo 4 does release, it'll be available on Xbox One, PC and PlayStation 4. There has been no mention of upgrades for next-generation consoles — the Xbox Series X, Xbox Series S and PS5 — but the game will at least be playable on those platforms.
Activision Blizzard has confirmed that Diablo 4 won't be released in 2021, meaning players are waiting until sometime in 2022 at minimum.
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