https://wccftech.com/amd-am5-lga-1718-socket-layout-heatsink-tdp-requirements-revealed-up-to-170w-tdp-sku-am4-heatsink-compatible/

Further details regarding the AMD AM5 LGA 1718 socket which will feature support for next-gen Ryzen Desktop CPUs and APUs have leaked out. The latest information comes from TtLexington over at Twitter who has leaked out the first design schematics of the AM5 socket.

We have already got several details regarding the AMD AM5 LGA 1718 socket platform but what's new is the fact that these design documents confirm that AM5 will retain compatibility with AM4 heatsinks and coolers despite a massive change in design. This is because the retention brackets & mounting holes are in the same position so no changes are required.