https://www.polygon.com/2018/10/18/17994146/diablo-blizzcon-2018-blizzard

With anticipation building for a big Diablo announcement at next month’s BlizzCon, Blizzard Entertainment got out ahead of its annual fan convention to temper expectations about what to expect from the franchise.

Blizzard made a similar expectations-setting announcement last year, outright saying it wouldn’t have news to share about Diablo at BlizzCon 2017. For this year’s show, Blizzard appears to be suggesting that we shouldn’t expect what many Diablo fans are expecting — aka Diablo 4.