In a fairly surprising move, Apple has changed out 3 video cards for the Mac Pro and added 3 new models. You can see them at the Mac Pro Specs Page. They are an AMD RADEON PRO W6900X with 32 GB of RAM for $2400, an AMD RADEON PRO W65900X with 32GB of RAM for $5600, and a AMD Radeon Pro W6800x DUO with 64 GB of RAM for $4600. These are all very pro level current generation cards and should give a noticeable improvement to the graphics for those with a Mac Pro, and they all add 4 Thunderbolt 3 slots and can be linked together for more graphics power (and expense)
I am glad to see that Apple is still doing some things to update the MacPro, now lets hope the rumors are true and they update the CPU one time before moving on completely to Apple Silicon.