Famous leakster Komachi has enlisted a list of AMD processors across all segments that are expected to launch till 2022. The roadmap offers a great deal of info on what can be expected this year including Threadripper 4000 and Ryzen Surface Edition refreshes. What is also being indicated is that 2021 may not see HEDT or mainstream desktop CPUs. However, there are chances that AMD may revive the shelved ARM-based K12 project.
https://www.notebookcheck.net/Roadmap-enlists-AMD-processor-codenames-expected-till-2022-No-hint-of-AMD-Ryzen-desktop-CPUs-indicated-for-2021-but-will-ARM-K12-be-revived.466320.0.html