This is a combination of vaguely encouraging, and vaguely maddening.
Perhaps I'm just a Luddite, but what I really want from my desktop Macs is, basically, what I already have in my 2008 Mac Pro and my very ancient Mac Mini, just updated, because those machines won't last forever.
The 2008 Mac Pro has the giant aluminum case. It has four drive bays. That machine has been an absolute warhorse for me. It's pretty much been running every day since 2008. I've produced a lot of video clips and multi-track songs using Logic. The only things I haven't liked about it have been (1) Snow Leopard was more reliable for audio, on this box, than later releases, (2) Apple has gradually walked away from things I wanted to do with the server subsystem, like maintain a usable current version of Apache in the OS distribution, and (3) the box is quite loud for use in a recording studio.
With the Mac Mini I am actually planning to buy some newer refurbished Mac Minis with SSDs. These machines are almost perfect for use in recording situations.
Apple is so obsessed with design -- the tin can design of the modern Pro, whatever "modular" design they are cooking up with the future Pro design -- that it doesn't sound like they will consider that the old Pro had an industrial design that was almost ideal, with the exception in my view of the noise level. A honking big case with a lot of thermal mass and big fans and a lot of room for hot memory and drives is in fact perfect. It is beautiful to me because it is so simple and reliable. It doesn't need to be tiny. Another option would be a rackable version. And that's it. That's all I need from a high-end computer.
For the low-end utility machine like the Mini I want it to be small and _silent_.
The iMac probably has enough CPU but I don't think it is quiet or expandable enough and I need 4-16 terabytes of storage right in the box and an easy way to back it up _to physical drives in my own house_, not the cloud.
I'm still resentful of the thousands of hours of work I put in to Aperture projects. Tens of thousands of photos, many with a lot of delicate editing, which don't even render on the screen correctly anymore. I'm still resentful of all the projects I had built in iMovie which don't work in later versions because of the features that Apple jettisoned. If Apple has a solution for the two big needs I've got -- the small ultra-quiet media "capture" capability (for audio), and a big honking _simple_ Pro for editing and production, _and_ it appears they are serious about maintaining Logic, then I'll stay with them and probably buy more Macs. If Logic goes, I'm gone. (Mac user and on-and-off developer since 1985... Apple user since 1977...)