The OpenBenchmarking database entries reveal an 8-core Ryzen 7000X model that can boost to 5.21 GHz, while MLID reports 28-37% Zen 4 single-core performance increase with even higher multi-thread gains over existing Zen 3 models.
https://www.notebookcheck.net/Latest-Zen-4-leaks-8-core-Ryzen-7000X-CPU-pops-up-on-OpenBenchmarking-estimated-performance-gains-over-Zen-3-revealed-by-MLID.619300.0.html