Got a 970 and tied it , wasn’t impressed with the frame rate of a static scene but it looks promising so will it come to us ?
What do you mean? You can install the demo to try it out, but the tech behind it isn’t likely to get added to UE4 officially unless it works with a wide range of hardware
Contact Nvidia for access to VXGI. It’s up to Nvidia, not Epic, Nvidia just happened to use UE4 for the demo.