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.
In V-Ray 3.4 all parts of the engine have been greatly speed up. The new extremely optimized CPU rendering brings V-Ray to speeds never seen before rendering, providing a feature full and powerful production tool set for high-quality, high-resolution images and animations with V-Ray. V-Ray provides 100% physical correct ray tracing methods. In addition V-Ray 3.4 now also offers blazing fast GPU render options for previews and final frame rendering.
V-RAYforC4D fully supports Maxon Hair via real 3d geometry using V-Ray’s memory efficient hair procedurals. The V-Ray Hair BRDF gives physical correct Hair shading. Effects like base color sampling, root tip color & transparency, are supported. Also included is V-RayFur and V-Ray FastFur.
Full list of features available here: http://www.vrayforc4d.net/v-rayforc4d-3-4-released/