They say this can be applied to many different rendering engines. They have already incorporated it into iRay.
Read more about it here: https://blogs.nvidia.com/blog/2017/05/10/ai-for-ray-tracing/
The article gets into some cool details about how they trained the AI.
Super cool and scary at the same time:)
BTW, I did not get to attend this conference, but I know BILT Committee member Nicholas Kramer was there, so I look forward to hearing what he thought of this announcement and the conference in general!