So what's interesting about that chat?
It's common knowledge that an Apple employee, even if they have knowledge, will not speak of an unreleased product before it is officially announced by Apple.
So my question is why would you waste "Randal's" time by asking him loaded questions that either he is not allowed to answer (regardless of whether or not he knows the answer, which in my experience he does not know).
Also if you were really interested in buy a new Mac Pro today and Apple upgraded the machine tomorrow, they would normally send you the revised machine (of course if it's a replacement model of what you ordered).
Whatever, whatever.
I also did ask other Mac related questions that I did not include in that convo.