This event has been known for a while:
https://www.wowhead.com/news/winds-of-sanctuary-diablo-themed-event-in-wow-rewards-baalial-battle-pet-and-332323
https://www.icy-veins.com/forums/topic/72948-everything-we-know-about-the-winds-of-the-sanctuary-diablo-4-event-in-wow/
This is exciting! I’ll be smashing out a heap of quests when I get home from this nature retreat. It’s funny that I’m high off life in two ways. One for enthusiasm for what I want to do when I get back to suburbia, but also what feels like the huge amount of oxygen in the outback.
I was almost happy for a second then I noticed the new rep and hence the only thing I’d care about was excluded, thanks blizzard.
Rep buff is not applying to the Iskaara Community Feast. Only getting 60xp a pop instead of 90.
Wished more events like this for greatly increased rep & exp happened more often, this is pretty good for DF renown though. 
Well, at least the XP buff will be worthwhile, rep buff excluding Niffen kind of makes me not care about it.