With Embree in Carrara your renders will become so fast that you will no longer need to turn-off full raytracing or use interpolation to get some speed.

I am almost certain that Embree will be in Poser Pro 2016, simply because Smith Micro's management team is competent at managing software products and Daz's management isn't.

With Embree in Poser Pro 2016, there will be no point in using Carrara anymore.