The new concept screenshot is a real-time in-game render!

[Oscillate_Wildly]

I think the shades you're talking about is exactly what we see in the game right now when you use spells/weaponskills. Everything gets darker and there's a light coming from the PC, which I absolutely love. Maybe this is what's on the image? (ie look at Kain).

I was thinking that too, about how you get lowered lighting when you use a skill. Sometimes I don't notice it but I think the game still does this. D: