It's very soon. They are encouraging people to log in to the beta grid to test out things, so they can get this 100%* right. There's a project viewer, and some regions dedicated to it on the beta grid. Let me try to find a blog post...
thaumata: I'll look at it, though I'm used to working with pbr, it looks like they aren't giving us -all- the materials yet, so maybe that will give me a better idea on what I can do with it [I do a lot with things like gems, so..... ]
There’s also going to be a fail safe of applying a baked texture to the mesh first before applying the PBR material, so that anyone with an older viewer sees it as intended, so I wouldn’t worry too much, as we’ll have an overlap period of having to do both to some degree.
I like how it works on metallic things [I had my jack o'lantern from last HocusPocus to test on], but I want to see how it will work on glass and such.... now my eyes are recovered from eye doctor, I'll see how it does.