“First off we want to mention that we definitely hear our community. Here's the statement that they received directly from Blizzard: Kotaku has updated their original article with a correction: Blizzard did NOT plan on announcing Diablo 4 at Blizzcon this past weekend. Was this it? Hopefully we'll find out soon. Although, if you do read the news post again, they do mention that they aren't ready to announce all of their plans at Blizzcon.

(We’ve heard it’s gone through at least two different iterations under different directors.)' - Jason Schreier, Kotakuīlizzard has yet to comment on the story, so we cannot confirm whether the sources are correct. 'One of those people told me that the Diablo team wasn’t yet ready to commit to an announcement, as Diablo 4 has changed drastically over the past four years and may continue to change further. Allegedly, they were going to announce that they were working on Diablo 4, but with no concrete vision in place, they pulled the announcement - hence the news post from the official Blizzard/Diablo site: According to sources close to Kotaku, Blizzcon didn't go exactly as planned for the Diablo team.

Diablo 4 announcement