Arnold 6 is included with Maya 2020 and can now be used for production rendering on both the CPU and GPU. With a single click, users can switch seamlessly between CPU and GPU rendering, empowering them to choose the type of rendering best suited to their specific needs and workflow. From real-time look development to interactive lighting, Arnold GPU brings speed and power to artist workflows, making it possible to work with near final quality renders at truly interactive rates. Artists can get immediate and more responsive feedback when tweaking shaders and adjusting lighting, giving them more time for artistic iterations.
Arnold 6 also adds support for hard creases in adaptive and multithreaded mode, multiple scattering between microfacets for rough dielectrics, improvements to the Physical Sky shader, better roughness mapping of the Oren-Nayar diffuse BRDF, improved rough thin-wall transmissions in the standard surface shader, more accurate albedo AOVs, and a new AOV Write Vector shader.