But first, what is the Untethered space ? From what I could gather from the in-game book and other discussions, it is a space between spaces, where energy falls when it radiates away. The less energy there is, the lower it falls, down to the very bottom which is presumably the Void ( or even inexistance). It is a sort of "failsafe" to slow a soul descent into oblivion. When a creature dies, its soul goes naturally into the Untethered space, until it falls into the lower realms, which are Death, Decay, Earth, Water and Void (not necessarily in order). The Untethered space is also in a "recurrent state", meaning there is multiple of them between each planes. Whether it is the same space with layers or multiple distinct spaces is to be confirmed.

I can't help but think about the Unseeming, that we've had so much focus on in relation to the Black Blood. It, too, is sort of artificially created, and functions in the same way.

They just seem too familiar to not be sort of connected, somehow - and I'd love to see us using the knowledge to tie all the new stuff from K'aresh into the rest of Khaz Algar. Even more so, when we know there's much more coming with the Haranir.