All that’s from a big roundtable chat from Blizzcon featuring several developers, published byWccftech.
But there’s also some Big Picture stuff about the future of Diablo.
I think Diablo as a franchise in general is extremely poised to do that."

“It’s been four years since we announced Diablo 4 at BlizzCon,” they told reporters.
“At the time, there was sort of one game that most people were playing with Diablo 3.
Perhaps they’ll take a stab at do something similar with Diablo.
Blizzard have toyed a bit with the key workings of Diablo prior to doing an Ubisoft with Diablo 4.