https://wccftech.com/diablo-4-announcement/

Yesterday, we have reported that Diablo 4 was going to be announced at this year’s edition of BlizzCon. A few hours after the original report has been posted online, Blizzard has responded to it, denying that the announcement has been pulled out at the last moment.

In a statement sent to Kotaku, Blizzard confirmed that no announcement has been pulled from this year’s BlizzCon. The publisher also confirmed that multiple teams are working on Diablo projects, and they will be announced at the right time.