
Blizzard Entertainment is looking for programmers to start on a brand new unannounced game, and it is not the Next-Gen MMO. The new game is currently running on the World of Warcraft engine. Based on the job requirements, it seems they want to build a new engine from scratch.
Paul Sams had hinted twice in the past two years their interest in developing a new IP.

Diablo III Season 38 launched with Ethereals back, but players are reporting Error 395002, disconnects, and server trouble.

Diablo 3 Season 38 starts March 27. Here’s what to finish before Ethereal Memory begins, from class choice and stash cleanup to Conquests and Ethereal

Via Diablo’s global director of community Adam Fletcher, Blizzard is introducing new measures to improve the quality of season launches in the future. Across both Diablo 4 and the aging Diablo 3, fans of Blizzard’s games should all benefit.
If they didn't let the cellphone guy touch the 3rd one in first place, they wouldn't have to dance around like clowns trying to make money.
We've been asking for less "boring" seasons... "boring"... not "buggy"... same ol' rehashed content just a different color is not working.
So excited. This could very well be the new IP they have been hinting lately.
Wow, they just keep coming don't they!!
New IP from Blizzard would be awesome! Nice find.
Wow that's pretty huge. It's been awhile since Blizz have done anything NEW. Looking forward to seeing what this could be!
A new IP? Is this going to be a first person shooter? That would be a turn in the books!