(This'll sound like a jerk statement, but I really don't mean it as such.)
I find it curious as to how the sentiment is always, "It's okay for those people, but it'll never happen about something I care about."
The truth is, the demise of the Xserve created an affect that has a direct impact on the need for Mac Pros: Many shops voted with their dollars and did not switch over to Pros as a replacement and migrated away from OS X Server as backbone infrastructure.
The problem comes down to trust -- and Apple burnt a lot of theirs up in the professional and enterprise markets by tossing those that needed Xserves cleanly (and unapologetically) under the bus. Their education and enterprise field and sales reps did very little to smooth those waters, either.
I hope this is just rumour fodder. I really hope that Apple does continue providing a professional class desktop. I want to believe that my gut feeling that we're (rapidly) approaching a time where all Apple produces are consumer appliances is wrong.
But considering that Apple's belief that it is okay to inform users that in order to reinstall their "server" class operating system, they need to recovery boot and download over the internet -- No, I don't believe that Apple, as an entity, has any real consideration of their products outside of the living room or travel bag. Perhaps they like the concept of SOHO use, but on the professional stance, they could care less.
As long as you can write iOS apps on an iMac, that's all that matters.
