Ok, so UHD spec allows for discs in three sizes: 50GB with 82 Mbit/s, 66GB with 108 Mbit/s, and 100GB with 128 Mbit/s, right? The BD player in the PS4 Pro is 6x, so if Sony does eventually write the software, I think 6x max is 200 Mbit/s? So should be able to support it iirc - the 100GB disc doesn't require any different optics either I think.
So perhaps, they may still support it later but aren't ready to commit to it just yet? (software not ready / not certain streaming will kill it before it starts?)
We'll see.
I am interested in that VR will indeed be able to benefit from the PS4 Pro (haven't seen the presentation yet, but saw something was demoed). So it is definitely on my radar. And a 4k TV ... hmm. Playstation VR first, then if I like VR, PS4 Pro next, and if not, PS4 Pro when I go 4K, we'll see.
Also interesting, because this move now means we may see yearly or bi-yearly updates to the PS4 specs, and that software will now likely stay compatible in future.
Will be interesting to see if Microsoft did it right (they certainly did some things right) or if it will be too late.