A Second Diablo 2 Expansion Was “only designed, never produced,” According to Series Creator

From GameWatcher: "Diablo II: Lord of Destruction is a point of reference for the ARPG genre and still attracts a consistent player base even nowadays. But while the series would enter a prolonged hiatus after its release, creator David Brevik has confirmed that a follow-up expansion was, indeed, in the works.

"Yes, sort of… it was only designed, never produced," Brevik replied on Twitter when asked about Diablo 2's second expansion. "I had a multi-page design doc going over new classes, new areas, new mechanics and story concepts. That’s as far as it got.""