Well, it depends how you look at it.
What new hardware has been available since 2014?
vs the haswell processor and GPU in it...
Broadwell = meh
Skylake = meh
Kaby lake = meh
All 3 of the above are mostly power consumption reduction for mobile. performance improvements have been negligible, 5-10% if that per generation on cherry picked intel benchmarks - and most people’s machines who aren’t pro users spend 80-90% of their cpu time idle anyway.
It simply hasn’t been worth doing an update. Irrespective of whether or not apple have abandoned the mini, there’s simply been no compelling reason to update the BOM for the segment it serves.
With Coffee Lake the new standard is 6 cores for i5 and i7, and even quad cores on the i3s (and presumably mobile low watt parts).
I would add to this…..
Apple built its reputation on developing IT products (hardware and associated software) that can easily be used, without having to know much about computing…… Ideal for the average Joe or Jill who just wants to do stuff. Geeks with an inclination to tinker, and push hardware to its limits have a different point of view. iOS, iPhone and the like carry on down that path, and profitably…… maybe to the benefit of average folks using Mac OS / MacOS.
While the Mac hardware may not be cutting edge (and the Mac Mini has generally been last in the range to see updates), much of the latest hardware these days is indeed of more benefit to laptops than desktops. All the current Mac offerings run the latest MacOS and associated apps, and will continue to be supported through several updates.
When I got my first Mac Mini, the 2005 original, there were only 2 USB ports. Office for Mac came preinstalled, but licensing it was an extra cost. All up the base model, with 0.25 GB RAM cost me about 30,000 baht, before I bought a monitor, keyboard, mouse, speakers, USB hub and a UPS. Upgrades to OS X came on a CD, and cost a pretty penny.
My second Mac Mini, the 2009 I am using now, cost about the same in base form. It came with 1 GB RAM and has 5 USB ports. I paid an extra 5,000 baht for iWork, for an all up cost of about 30,000 baht. An acquaintance had a spare copy of Office for Mac, which the shop installed at no extra cost…. I seldom use it now; iWork is fine for my needs. Upgrades to OS X were still expensive, and when I went up to Mountain Lion I needed more RAM, so I had an extra 4 GB installed.
Since then OS and app upgrades have been free, and iWork comes pre-installed at no extra cost…… Apple led the way in this, but would they have done so had they not been making huge profits from iPhone sales?
Now I could buy a base model Mac Mini, which would probably be adequate for my humble needs, for 19,000 baht, with the apps I use pre installed. The mid level Mac Mini would cost about what my 2009 base model Mini cost back then…… nearly a month's pay for me, then and now (I have had just one 1.5% "cost of living rise" from the Thai government in a decade.)
https://forums.macrumors.com/thread...rtainly-coming.1681773/page-427#post-25196364
When it does come again, sooner or later, the new Mac Mini will almost certainly be evolutionary, not revolutionary. It will no doubt run the latest monitors and other peripherals, and have the same ports as the current iMacs. It will almost certainly bring hoots of derision from quite a few here.