In a comprehensive article that interviewed 11 current and former Blizzard employees, Kotaku reported
this development. Following a canceled second expansion to Diablo 3
that was supposed to follow Reaper of Souls, and the cancelation of
another project code named Hades, many team members began working on
Fenris, which sources claim is the current incarnation of Diablo 4.
major pillar for the game and its art direction is reportedly “Embrace
the darkness.” Reportedly in development since 2016, many who have seen
it are optimistic about the direction that it’s taking. Though still in
early development, the game is expected to be released in 2020 or later.
It’s unclear if the game will to come to PC first, or if it will be
released simultaneously on consoles.