http://www.anandtech.com/show/10179/nvidia-announces-24gb-quadro-m6000
Big mumma.
This is exciting because GPU's are actually starting to get close to having enough VRAM to deal with arch-viz (and all the rest of it, of course) size scenes. This has always been the thing that prevents me from using this technology more, GPU's just can't handle the scene sizes without some pretty heavy compromises. This invariably means the GPU rendering is relegated to testing purposes usually early on in the lighting process, the "roughing in" so to speak.
Looking forward to taking the GPU further down the pipe, this is of course becoming easier too, as VRay RT increases in its capabilities.