Three SKUs from the AMD Ryzen 5000G desktop APU series have had their core specifications leaked. The three chips in question are the Ryzen 3 5300G, Ryzen 5 5600G, and Ryzen 7 5700G. The top-end Cezanne unit will offer eight Zen 3 cores and clock rates from 3.8 GHz up to a maximum boost of 4.6 GHz.
https://www.notebookcheck.net/AMD-Ryzen-3-5300G-Ryzen-5-5600G-and-Ryzen-7-5700G-specs-leak-reveals-Cezanne-desktop-APUs-with-up-to-eight-Zen-3-cores-and-maximum-4-6-GHz-boost.530500.0.html