Holy shit, this looks fantastic.

Every new reveal looks better than the previous one - from act I, to act II and now (possibly) act III.

One very neat detail to notice: at first, around 0:22 second you can see that character is floating above stairs when walking by them, and you could think that it is some kind of graphical glitch or "junk", but when you look closer, the floating BEGINS at 0:18, when some kind of vortex spell is cast: from now on, when char is in the area of spell it floats (anti ground effect spell maybe?) and the stairs floating is visible after just because part of the spell is still present on stairs itself: as soon, as char leaves spell AOE it begins to run as usual. Great detail which completes the whole animations and graphic approach that GGG is taking with PoE2 - cannot wait to see more!