It’s an interesting fact that the listings explicitly state unannounced project, and the listings ask for things that wouldn’t make any sense if the positions were for a D3 expansion.
PBR stands for Physically Based Rendering, that is the technology many modern game companies are using to make photo realistic objects in their titles.
Accordingly the artist positions ask for proficiency with current surfacing techniques and PBR work flows. The answer to that can be prominent on the Blizzard Entertainment job board. Upon scrolling down, you can see that Team 3 is looking for new hires for a Unannounced Project. So, the last time a high number of gameplay related content was added was back in 2014 when Blizzard released Reaper of Souls, as you may remember. Blizzard only added new content in patches like Patch 0, that introduced Greyhallow Island, set dungeons, empowered rifts and expanded two existing zones, or 0 before that, that added new difficulty levels, season journeys, the Ruins of Sescheron and the Kanai’s Cube that can be found within, since therefore. One thing these reportsseem to point out is the percentage of people that are left to work on Diablo II. Now this all points to a sequel rather than the still absent expansion, so this doesn’t rule out the possibility of a Diablo II expansion.
All in all, fans should expect to receive more of these patches with a major one on occasion.
Diablo II ain’t in a place where it can launch a really new expansion, with some amount of its most influential members gone.