AMD has confirmed that all AM5 motherboards will still use AM4 mounting hardware. So all of our coolers that have AM4 support are also compatible with AM5.
https://www.pcmag.com/news/amd-expect-our-first-zen-4-desktop-cpus-later-in-2022-on-new-am5-socket
"AMD also announced that new AM5 motherboards will be fully compatible with existing AM4 coolers without the need for additional brackets or hardware. This will make upgrading from an existing AM4 system easier, as you can continue to use the same air or liquid cooler. It will also make buying an aftermarket cooler less of a headache, as there will be an abundance of compatible coolers already available at launch."