And fans, like myself, have a right to be fuming. Although I'm not that mad myself, just disappointed.
This video has 82K dislikes from 117K views, with only 3K likes. They put Diablo on the banner for Blizzcon, said it was an exciting time for Diablo, and left this to be the last announcement at their major Blizzcon conference. This will naturally make Diablo fans very excited. What they announce is a mobile game, outsourced to a company which has just been making diablo clones on mobile. And this is basically just a Diablo re-skin of another game they released recently. Its low effort trash, and I can't believe Blizzard announced it in this way.
Anyway, the wait for Diablo 4 goes on.