Before getting your hopes up, the new 17 PCI IDs found in the AMDGPU Linux driver may not be directly linked to 17 new AMD GPUs, as PCI IDs are also used for engineering samples and custom-designed models from the AIB partners.
https://www.techspot.com/news/90988-amd-new-rdna2-pci-ids-linux-driver-suggest.html?utm_source=dlvr.it&utm_medium=blogger
https://www.techspot.com/news/90988-amd-new-rdna2-pci-ids-linux-driver-suggest.html?utm_source=dlvr.it&utm_medium=blogger