Rumors are thick, but no telling what we will see. I've heard rumors of an update to the Mac Mini 2014 making it more like the Mac Pro, but that seems rather odd to me. The Mac Mini is their least expensive model and the Mac Pro is their most expensive model. It makes no sense to combine those two models into something that will cost more than Mac Mini lovers will be willing to pay and provide way less computing power than professionals who use the Mac Pro need.
At any rate, I love my old Mac Mini late 2012 model. Back then they were made to allow a small amount of modification. I bought mine with the i5 chip, 4 GB RAM, and a 500 GB HDD. I bought 16 GB of RAM from a 3rd party company for a fraction of what Apple wanted, and upgraded it to 16 GB of RAM. I'm still using it as a secondary computer today. It runs Mojave and with Boot Camp it also runs Windows 10. Ironically, Windows 10 runs faster than Mojave on it. It is a bit sluggish now under Mojave.
Unfortunately, two years later Apple updated the Mac Mini 2014 which turned out to be a downgrade. They took away the ability to modify them, unless you are good at electronics and skilled in soldering. Certainly not an option for the average owner. I suspect/fear that any new update to the Mac Mini will be similar. They will probably use a ton of glue to secure the case and do everything they can to thwart owners from trying to upgrade them on their own. That is rather chicken poopish IMO. I know they need to make a profit, but they go overboard. They should at least allow us to easily add more RAM and upgrade the HDD/SSD on our own, but I seriously doubt we will ever see another Mac that does.
