The x86-64-v4 micro-architecture feature level is the currently top-end level that mandates AVX-512 support over the x86-64-v3 requirements of AVX2 and other features found since Intel Haswell and AMD Excavator era processors. This means for modern Intel Xeon servers and AMD Zen 4 and newer, x86-64-v4 packages can run and for compute intensive applications able to leverage Advanced Vector Extensions 512, typically better performance.
The news slipped under my radar until this weekend that CachyOS has been experimenting with an x86-64-v4 repository. Since December they have been trialing this new repository for those on AMD Zen 4 or capable Intel hardware to enjoy x86-64-v4 optimized packages and currently collecting user feedback.
Those wanting to try out the CachyOS x86-64-v4 packages to complement their existing x86-64-v3 support can find the details on their blog . I'll work on firing up some new CachyOS Linux benchmarks soon with these AVX-512 level package builds.