After 5 games in 30 years, Diablo lead hopes future releases will be more frequent before the series' 60th anniversary

Yes, Immortal counts, apparently ...
GameSpot

Future Diablo Games May Release Faster Than They Have In The Past

Diablo 4's Lord of Hatred expansion arrives April 28. When it does, it will completely revamp the game's existing skill trees by adding new choices and removing passive skills. As for what to expect ...
Game Rant on MSN

Diablo 2 Resurrected Getting a Surprise Class After 5 Years Isn't Even The Best Thing About Its New Update

Diablo 2: Resurrected just got its biggest update ever, and this not only adds a new class, but a massive QoL feature for PC and handheld users.
CNET

Diablo Celebrates 30th Anniversary With New Warlock Class, Coming to 3 Games This Year

Players will get to see the class's beginnings in Diablo 2 today and its more destructive evolution in Diablo 4 this April.
IGN

Summon your courage.

Blizzard will celebrate the 30th anniversary of Diablo by adding the Warlock class to a swathe of games — including Diablo 2: Resurrected, more than 25 years after the game's original launch.