We're just weeks away from Microsoft releasing the Windows 10 May 2020 Update to the general public. In fact, just yesterday, it was released to developers on MSDN. As usually happens around this time, the company is updating its documentation for the feature update.
One of those changes is for Windows Processor Requirements. This is where Microsoft usually posts new chips that are meant for the new update. And for Windows 10 version 2004, the only new addition is AMD's Ryzen 4000 series of processors.
On the Intel side of things, the CPUs listed include up to 10th-gen Core processors, Intel Xeon E-22xx, Atom (J4xxx/J5xxx and N4xxx/N5xxx), Celeron, and Pentium. Intel has been producing 10th-gen CPUs for a while though, so this hasn't changed. AMD's processors include up to seventh-gen processors (A-series Ax-9xxx, E-series Ex-9xxx, and FX-9xxx), Athlon 2xx, Opteron, and EPYC 7xxx. For some reason, it's missing AMD Athlon 3000, which was announced at CES.
That's not all that's missing though. For Qualcomm, it only shows the Snapdragon 850 and Snapdragon 8cx, leaving out the new Snapdragon 7c and Snapdragon 8c. These are most likely oversights, which will be added whenever Microsoft notices its mistake.
The Windows Processor Requirements page is really just a way of listing which versions of Windows 10 are optimized for new processors. Obviously, there are AMD Ryzen 4000 PCs already on the market running Windows 10 version 1909, along with PCs with a Snapdragon 7c. In fact, the only actual requirements for Windows 10 processors is that it's a 1GHz or faster processor that's compatible with the x64 instruction set, supports PAE, PX, SSE2, CMPXCHG16b, LAHF/SAHF, and PrefetchW.