This Mac Pro concept envisions the refreshed device as a modular Mac Mini
Germany-based CURVED/labs has envisioned one such iteration of the Mac Pro, with a modular design and a pro display that comes alongside. The concept ditches the trash can aesthetic for an upright Mac Mini with a Touch Bar at the front. It also swivels to the sides to allow users to upgrade various components, such as a graphics card (two of em, in fact), hard disks, solid state drives, and more. And yes, unlike an Apple mobile device, this one does come with a headphone jack.
On the display side, CURVED/labs envisions a 27-inch cinema screen with a Retina display. USB accessories are connected at the back.
It goes without saying that the final Apple design will likely be drastically different than this. (Take a look at the German companys iMac concept, for example.) There are also no mentions of any kind of cooling component, but again, its a concept, so feel free to praise or pick it apart as much as youd like while were in the dream phase.