did we have any explanation yet of why thrall is front and center of blizzcon art this year?

As Marlamin mentioned below, there is that Koi looking fish from the South Sea
Plus we have The owl loa of change, who sounds like the Egyptian Moon god.
So that leaves us with...what? Island on the south seas with a desert biome, playable Jinyu, likely partial revamp and focus on Elune.
I would preorder this.

Point of order, but there's still probably going to be a 10.2.3 and 10.2.7 patches after the Dream patch. To say nothing of the next expansions pre-patch Plenty of time to fix Tyr and have him explain any missing gaps in-game. Could just be unfortunate that the patch cycle worked out that we don't get those patches until after BlizzCon.
I mean, I'm not invested into Teriz's ideas, but Nerub thing is definitely much more highlighted in DF than any Avaloren. Mr. Sunflower and this item desc at the very least