Right, the new Mac Pro is probably perfect for first time adopters, whereas I'd think they'd be better off with an iMac instead considering the performance and what you pay for, especially with single core applications and OS efficiency.
But for steady customers who've stuck with the Mac Pro line up, there is no point in upgrading right now, given what Apple has to offer. I don't buy a Mac for its hardware but the software, though I don't want to flush my money down the toilet, and I can tell you that a lot of other professionals think the same way. If you don't care about these things, than you've never really run a business with their hardware for longer than a couple of months.
The point is I'd like to buy into their new Mac Pro and upgrade my studio Apple hardware but at the moment, they really have nothing to offer that I couldn't replace with the older 2012 and earlier models.
In addition, they ridded their new model of optical drives and upgradable internal storage, and yet don't offer any proprietary housings / cases along with a purchase, which is quite frankly unacceptable, since I really depend on burning blu rays to store away clients' data.
I've always been happy with Apple's Mac Pro model until they introduced the current model.