Mojave (10.14) is going to be the first version of the Mac operating system that I will finally be making my primary desktop environment. As stated before, my 2010 Mac Pro is still on 10.9.5 (Mavericks) while my Air has both Mavericks and High Sierra (on an external SSD). My biggest issue was the UI direction in terms of color/contrast which reduced the readability beginning with 10.10 (Yosemite) and I wasn’t going to sacrifice that even though there was a point where I was out of the security update cycle for the past few years.
The full implementation of Dark Mode in Mojave helps alleviate that aspect. Mojave supports (not in the initial beta build but in a future one) mid-2010 through 2012 Mac Pro’s with a Metal compliant GPU. So I quickly purchased a flashed Nvidia GT 740 from MacVidCards for $120 since it is the lowest end card to support Metal (I didn’t need anything high performance since I do my gaming and 4K stuff exclusively on my Asus system now). Nonetheless, this will still amount to a huge boost over the AMD Radeon 5770 (the original GPU).
I do have a suspicion that Mojave may also end up being one of the last officially supported versions that will run on these older Mac Pro’s since Apple has already stated that the new Mac Pro will be a 2019 product where next years macOS update will likely coincide with the launch of that new system. The inclusion of the mid-2010 models in Mojave is what I consider a goodwill gesture since the 2012 Mac Pro’s were the previous cutoff for Metal support in El-Capitan (but the mid-2010 and 2012 Mac Pro’s are virtually identical with the latter having only some minor processor updates). One still needed an upgraded GPU option for Metal though.
Considering how long I’ve stayed with 10.9.5, this doesn’t really bother me that much should Mojave be the end of the line as there will be ways to get future versions to install (I’ll still likely be able to get a few more years out of this system running Mojave though). Plus I’ll need to see what Apple comes up with the 2019 Mac Pro (though my expectations are really low as far as it being anything close to internally expandable like the cheese grater form factor).