https://www.kitguru.net/gaming/matthew-wilson/blizzard-shares-new-diablo-iv-details-in-quarterly-developer-update/
 
Diablo IV does not have a release date just yet but we’ll be getting regular progress updates as development continues, rather than staying silent until the next big event. The February update details UI changes, the addition of controller support on PC, how couch co-op works and a nice overview of enemy design- starting with a cannibal tribe.
 
Blizzard got a lot of feedback on UI from Blizzcon, due to this, the ‘painterly’ design of the inventory screen is going to be changed to give more natural texture and realism to your stored items. Brightness and saturation of icon backgrounds has been tuned down and rarity indicators have been made a bit more subtle.
The classic Diablo action bar at the bottom of the screen is being moved from the left corner back to the centre based on feedback and players will also be able to re-bind the right mouse button in order to separate movement from attacking. Finally, Blizzard is planning on supporting controllers on PC for the first time in Diablo history, so players will have more choice over which UI and control method they prefer.
 
Couch co-op appeared in Diablo 3’s Reaper of Souls expansion but it is getting tweaked for Diablo IV. For now, Blizzard is focusing on UI updates for two-player co-op, including the ability for players to tinker around in their inventories at the same time or independently of each other.
 
As part of the art direction update, Blizzard explains that monsters are being reimagined in a darker, grittier form. The team is also designing ‘monster families’ and archetypes, so each family of monsters will have a different combat style and each archetype plays a different role in combat. One of the new monster families being introduced is the Cannibal tribe, which is described as a group of outcasts that prey on unsuspecting caravans and villages.
 
I think this is a very good idea. Otherwise you have to wait forever to find out what progress is being made for the gaming experience. 

poor track record ... no delivery date yet .. might need some new leadership & talent

I have total faith in Blizzard still since even if it’s not good at launch they will listen to fans and fix it. Diablo 3 was a good example of that.

Hoggle
I have total faith in Blizzard still since even if it’s not good at launch they will listen to fans and fix it. Diablo 3 was a good example of that.

In my opinion DIII still fails to live up to expectations in regards to gameplay. They could have done soooo much with it, but just sat on their posterior and did a remake with enhanced graphics. The skill trees were dumbed down (we asked for more complexity and customization), they could have added in chain attacks & combos which really wasn't implemented save a few instances etc. The story was 'good' (not great), the locations were 'ok' if not somewhat overused (desert anyone?)...
 
Blizzard just wreaks of recycled material at this point, this is why they haven't come up with a truly original brand in over two (2) decades; overwatch is such a heap of reused battle royale assets; sorry it's weak and lacks imagination. Hell, I'd be happy if the refurbished "Rock & Roll Racing" and pushed that out to the marketplace, at least it wouldn't be a rinse and repeat brand like Wow or Diablo. The company just needs an influx of new blood and new ideas, otherwise they're destined to wallow in their on bed of fecal matter.