Blizzard was originally going to announce that Diablo 4 was in development at the studio this past weekend during BlizzCon, but cut the announcement at the last minute.
According to the sources, no footage of the game was going to be revealed. Instead, the announcement would simply feature Blizzard co-founder Allen Adham telling the crowd about the game in a video which would play at the end of the keynote. This was apparently the plan up until a week or so ago, however, the studio decided to pull it due to the fact that they aren’t "ready to commit to an announcement."
Of course, this is just a report, so it’s always important to take it with a grain of salt, according to Kotaku
