About GPU support

Hi Team,

I just heard that dev team is working on GPU support feature.
What GPUs are going to support, NVIDIA or AMD/ATI?
The GPU is going to help on plot or farm phrase?
Is the performance much better than CPU plotting/farming?

Both Nvidia and AMD will be supported. GPU will help plot for sure, I would assume it could help with the farming as well but not sure. Should be at least 60x improved plotting speed from what I hear.