Blizzard pre-empts any “Diablo 4” announcement for BlizzCon 2018
Source: https://us.diablo3.com/en/blog/22549433/diablo-at-blizzcon-2018-10-17-2018 While not specifically mentioning "Diablo 4", Blizzard has decided once again (like last year) to throw ice water onto the burning hells by tacitly stating "we won't be ready…