8-core AMD Ryzen 4000 Renoir desktop APU on ASRock B550 Taichi motherboard spotted on UserBenchmark performing on par with the Ryzen 7 4800H - NotebookCheck.net News
AMD Ryzen 4000 Zen 3 samples cannot reach 5.0 GHz; 16 core successor to the Ryzen 9 3950X in development - NotebookCheck.net News
AMD Ryzen 4000 Desktop CPUs Could Feature Up To 20% IPC Increase
AMD Ryzen 4000 Mobile APUs: 7nm, 8-core on both 15W and 45W, Coming Q1
AMD Debuts Zen 2 Mobile Ryzen 4000 CPUs at CES 2020 | Digital Trends