Well, what do you know? It's Monday!
OK, it's 1 am where you live, narhiril (your in the US, right?) But still, we can expect the concept art sometime today or, failing that, tomorrow?
I have to dig up some of the earlier ones, but I should be able to have something uploaded by late tonight or tomorrow (latest). Don't expect Van Gogh here - most of the artwork consists of sketches (some hasty, some detailed) on notebook paper, without any vibrant colors. It's remarkably difficult to get away with bringing a box of colored pencils to class nowadays.
I also have to make sure that I don't leak too much in the way of future developments. The concept art tends to be a few steps ahead of the actual project at all times.
First uploads will probably be some early sketches of voidwalkers. Voidwalkers were originally divided into castes, but this was scrapped due to the unavailability of caste-based graphics. They also had a limited flight capability, but this was scrapped as well due to the inability to create it (it's either "cannot fly" or "flies all over the place," without a real possibility for wing-aided "jumping" as was intended - expect this to be re-visited when the ability to breach or climb walls is added). Original voidwalker sketch-ups had six to eight smaller wings.
The original castes:
Void Walker (normal, civilian)
Void Caller (ability to summon reinforcements)
Void Shaper (ability to create objects from nothing)
Void Cutter (massive destructive power at the expense of lowered defense)
The Shaper position later manifested itself as the "invoker" nobility positions, which, according to the lore, are responsible for the creation of voidshard. Cutters and Callers were cut, but both are likely to return in some form once caste-specific graphics are introduced. Cutters will likely have a breath attack, Callers are going to rely pretty heavily on new tokens.
Also featured in the artwork is some concepts of voidwalker weapons, most of which made it into the game. So, hopefully, you will finally be able to see what the hell a "twisted blade" and "void energy projector" are.
I'll try to put down DX:HR long enough to get something posted late tonight.