During the Season 2 Developer Update livestream, Blizzard announced that Diablo 4 is coming to Steam with the start of Season 2, October 17! After Overwatch has been added to Steam earlier this year, Diablo 4 will be Blizzard’s second game to be available through Valve’s game library.
Diablo 4 Season 2 Liveblog Official Diablo 4 Page on Steam
The gates of the Burning Hells have opened once more, welcoming more of Lilith’s children home.