There is a video but I'm on my phone so I cba finding it, soz!
I guess they're getting the ray tracing ball rolling, to encourage more work on it and next gen it'll work a lot better. Seems like there's not much reason to upgrade from the 10 series for these, unless money isn't an issue for you.
Have they actually explained what's going on? It looks more like a hybrid approach verse ray tracing everything.
Annoying just how buzzwordy this all is