Has Blizzard officially confirmed Diablo 4?

Diablo is considered as the legend of the virtual world in general and ARPG in particular, one of the three products makes the giant Blizzard famous. The image of a man fighting with monsters to get countless equipment as well as strong weapons always has imprinted on the mind of fans through the past decade.

To continue that journey, the latest sequel of the series is Diablo 4 which seems to be developed by Blizzard, and it promises to bring back the hell army of Prime Evils. This information is leaked through Blizzard's latest post when it recruits artists for a brand-new Diablo project.
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The recruitment post is as follows:

So this announcement has inadvertently confirmed that Blizzard is making a completely new Diablo game and almost certainly it is Diablo 4. We dare to confirm this because Diablo never had the supplement but only the main game, which is developed by the extended version. While Diablo 3 has officially finished from the Reaper of Souls version, Diablo 4 will be a much more feasible prediction.

It will take time for Diablo 4 to be officially announced by Blizzard, but GameHub will keep trace of the situation and bring you the latest information.​