SIGGRAPH 2017 brought more news about the integration process with Vladimir Koylazov sharing some details at Epic Games User Group.
Here are some of the revealed features:
V-Ray for Unreal is said to bring faster workflows and the ability to produce the highest level of photorealism with ray tracing. For those of you unfamiliar with the technique, ray tracing can be defined as a method for generating an image by tracing the path of light as pixels in an image plane and simulating the effects of its encounters with virtual objects. The technique brings a very high degree of visual realism (at a greater cost, of course).
So the thing is that artists and developers will now be able to get a V-Ray ray traced render straight from Unreal.
Stay tuned for more details on the integration process!