Does anyone know if the new graphic performance improvements (more work handled by GPU) will require an officially supported GPU, or if it will still work with a capable but not supported card (GeForce, for example)?

I'm using 2018 and I'm excited about the new features in 2019, especially the better performance.   My machine is very capable, except that I'm using a GeFore GPU.

If these new improvements require a supported card, I can make a case for an upgrade...but I need confirmation.