I am actually really interested in this especially since it is now known it will support Corona materials. Don't get me wrong, Corona is the renderer of choice for me but having a compatible GPU sidekick would be thrilling - sort of like V-Ray and V-Ray RT but with less compatibility as those two (while still disjointed a bit) are probably far more tightly knit. You can still use Corona for the heavy lifting while for quick feedback and smaller projects the GPU alternative is quite nice to have.
I also appreciate the incentive from AMD as they are a bit lackluster on the GPU rendering front for quite some time now. Their GPUs are pretty awesome for the price / perfomance ratio in gaming but you can't use them in CUDA rendering at all. I do feel like this will go over well with their R9 390 line (8GB of RAM).
I just hope more information will be available to the public, it's so hard to get any kind of info right now...