First of all, I'd like to thank AMD for their awesome open-source Linux drivers.
I'm a developer with a retina iMac, and I would really love to have 5K resolution support.
I know it's really hard, and Apple are doing some kind of magic in their macOS and Windows drivers.
Do you have any plans to implement this? 5K screens are not very popular right now, but they are going to be at some point.