Ah well, Apple lost a huge share in the market of professional editors and designers and many of them are used to wait for years before a significant update would come. Mac Pro for example. And I'm not sure if that thing sells, so far I see people jumping over to Windows with as much power as the new Mac Pro for less money.
The only thing that favors the new Mac Pro versus older models is it's lack of making noise which is good and Thunderbolt II for those using Thunderbolt devices and that the most expensive version is indeed impressive as for handling 4K video material. As for gaming it's been beaten by much cheaper PC's.
I'm saving money up tough for buying a new Mac Pro when my current Mac Pro will be to slow to handle the tasks, somewhere in 2015.
this post makes me giggle