https://wccftech.com/amd-5nm-next-generation-zen-4-ryzen-epyc-cpus-to-feature-over-25-ipc-increase/

With Zen 3 released, all eyes are set on AMD's next-generation CPU architecture for Ryzen and EPYC CPUs which is codenamed Zen 4. We have heard little about the next-generation core but rumors state that it is going to offer another huge IPC jump and a massive overall performance gain over existing processors.

The latest rumor comes from ChipsandCheese whose sources have reported them that Genoa, AMD's next-generation server family, is going to be insanely fast compared to existing AMD EPYC offerings. The source also talks about Zen 3+ and Zen 5 but most of the information that has been shared is related to the Zen 4 core architecture.