The first sighting of the Surface Laptop 4 has appeared, as has another of the Surface Pro 8. This time, the two devices have appeared on the Korean Agency for Technology and Standards, confirming their designs and model numbers. Microsoft is expected to announce the Surface Laptop 4 and Surface Pro 8 early next year with Tiger Lake chipsets.
https://www.notebookcheck.net/Leaked-Surface-Laptop-4-and-Surface-Pro-8-pictures-confirm-last-generation-designs-but-new-AMD-Ryzen-APUs-are-headed-to-Microsoft-s-laptop.506264.0.html
At this stage not releasing AMD options for flag ship laptops is just crazy. Eventually manufacturers will realise their customers want AMD options for top of the range devices.