Some of the new features of VRay 3.5 for 3ds Max include ability to add VRayScene object node to import .vrscene files in 3ds Max, NVIDIA MDL support, V-Ray GPU enhancements, and reworked lens effects.
NVIDIA mental ray is seamlessly integrated into Autodesk Maya® and delivers all the functionality Maya users have come to rely on. Artists can now experience interactive viewport rendering and easy-to-use global illumination with substantial GPU-acceleration.
V-RayforC4D 3.4 was released in December 2016. It is seamlessly integrated and optimized for both CPUs and GPUs, using whatever an artist picks to deliver high-quality imagery and animation quickly, even when working with complex 3D scenes.