Hi Philip, it's here: https://community.roonlabs.com/t/roon-optimized-core-kit-previously-reported-as-roon-os/14175/176?u=sean2016
Here Andy is talking about BOTH up-sampling and convolving across multi-zones simultaneously but the key point he makes is that we'll be able to test it for ourselves soon enough.
The advantage we have with the sonicT over a PC/Mac is that nearly all the resources are dedicated to running Roon Server and really nothing else.
One positive is that the recommended Roon Optimised Core Kit being recommended by Roon is the Intel NUC i5 I believe. I've only seen recommendations to go for the i7 for massively large libraries, not necessarily anything to do with 1.3 or 1.4 or 2.0. So I have a feeling the sonicT i5 will be fine for most of us for a few years but this is only based on opinion, not facts of course.
One certainty is that nobody has a clue what processing demands Roon Core will require 2 years from now. Anybody that does know should please tell me the winning PowerBall numbers in advance via PM please