I also don't quite get what are they going to be spending all this time on, what kind of "designing" is going into it? Picking components on NewEgg and figuring out the shape of their Apple-branded case? :)
Seriously, unlike mobile/laptops, Apple has no competitive advantage in traditional desktop computing. They don't make CPUs, chipsets, GPUs, etc. And there's no battery to fiddle with, or a case to make thinner or a keyboard to mutilate.
[1] https://www.tonymacx86.com/buyersguide/april/2017#CustoMac_P...