It has been a good while now since Mojave was released, and unfortunately we are receiving the same stonewall answers that Apple is known for. I have Mojave on my two MacBooks, and it is a stable OS, I don’t see a reason to upgrade a GPU to a supported one, or wait in anticipation for a driver to be released. My 5,1 is very stable on 10.13.6, and I see very little incintive to upgrade. BTTM was removed, which I use , and I think it’s safe to say with Apple going out of their comfort zone with the 5,1 making it “sort of” supporting Mojave, it will be the last OS X build released for the Mac Pro 5,1. With that said, I can’t see spending the money on upgrades just to get the rarely used features in 10.14, and lose and important one. What are others thinking about this?