Well, I assume they haven't upgraded the shader and the shader tree. Hopefully they will at at some point. I think Carraras shader system is great, however, it only needs a couple improvements to make it truly unbeatable: 1) A translucency channel 2) Anisotropic highlights 3) BRDF for blending layers with different highlight, shininess, transparency and reflection properties. 6) A gradient channel with options to blend on incidence, camera, or normal vector. and the true holy grail... 7) BSSDF for blending layers with subsurface scattering of light within layers. Just some thoughts.....