AMD will debut its Zen 3 next year, and is expecting big things from its next microarchitecture. While rumours previously pegged Zen 3 at offering IPC gains of around 8% over Zen 2, the reality could be much higher.
https://www.notebookcheck.net/AMD-claims-that-Zen-3-will-offer-beyond-15-IPC-gains-over-Zen-2.444010.0.html