A leaked 3DMark listing spotted by tipster @TUM_APISAK indicates that Microsoft is prepping a device featuring the AMD Ryzen 7 4800U. This is likely to be the upcoming Surface Laptop 4, the successor to the Ryzen 7 3780U-powered Surface Laptop 3.
https://www.notebookcheck.net/Leaked-3DMark-listing-indicates-that-a-Renoir-Ryzen-7-4800U-powered-Microsoft-Surface-Laptop-4-is-in-the-works.476645.0.html