Well, whenever it comes. I feel it'll end up more like Jonestown.
Looks like Acti-Blizzard had a hit with Shadowlands - https://www.wowhead.com/news=319757/world-of-warcraft-shadowlands-becomes-fastest-selling-pc-game-of-all-time
Rather enjoying it myself, there's always something to do so far but isn't too grindy to me.