I have been playing with this for the last several days, and it’s massively impressive. I have also been talking with NVIDIA about this, and they intend to develop it to a production-ready state and open a PR to merge it back into Godot. NVIDIA has built the path-tracer itself as a fully GPU-agnostic system, meaning it is not limited to NVIDIA GPUs. At the moment, the denoiser is DLSS Ray Reconstruction, which is limited to NVIDIA, but they are actively working on a second denoiser specifically to support AMD and Intel.
I am working on some demonstration scenes now so people have some stuff to play with, so hopefully I have more to share soon. Here are two demos from the last several days.