It's a bit early and ambitious but in its Financial Analyst Day 2022 presentation AMD is creating some waves with the mention of Zen 5 CPU microarchitecture.

AMD revealed Ryzen 7000 during Computex 2022: The manufacturer claimed "over 15 percent" improved single-thread performance as a result of enhanced IPC and higher clock speeds of more than 5.0 GHz, PCIe 5.0 and always an integrated RDNA-2 GPU. Variations of the company's Zen 4 die paired 3D Vertical Cache (3DV Cache) are planned, AMD also mentions that it has met its design goal for its current "Zen 3" architecture by building it on both 7 nm and 6 nm node processes (Rembrandt). Zen 4 architecture will be released on the 5 nm node (TSMC N5) and may see a shrink to the newer 4 nm node in the future.

The following Zen 5 design would be introduced at 4 nm, with an optional shrink to 3 nm. Zen 5 and based on that EPYC "Turn" processors would be available in 2024. 

Built on 5nm technology, the slide above shows that instructions per clock (IPC) have improved by 8–10% over the current Zen 3. AMD says that higher frequencies boost single-thread performance by 15%. Zen4 will also introduce an extra Vcache.

AMD confirms next-generation Zen 5 CPU microarchitecture, Zen 4 just 8–10% faster IPC