We are now beta testing Pi-ray, our exciting new version 3.14 of mental ray, within Maya 2016, in a private mental ray For Maya beta test. If you are interested, please email email@example.com, with your beta test request. Please state your company, how you use mental ray, and your machine configuration. In addition to registering in our forum, you need to have Maya 2016 and the mental ray for Maya 2016 plugin installed before installing the beta plugin.
The following image is rendered with the latest global illumination (GI) algorithm in 3.14. Enter the beta test to find out some great things about the latest GI.