https://wccftech.com/amd-ryzen-4000-zen-3-vermeer-cpu-and-radeon-rx-big-navi-rdna-2-gpu-october-launch/

Multiple reports from Chinese media have indicated that AMD is all set to introduce its next-gen Ryzen 4000 'Zen 3' Desktop CPUs and Radeon RX 'RDNA 2' GPUs in early Q4 2020. This will mean that we are likely to get both CPU/GPU families by October 2020, something that our sources had also pointed out back in March.

The latest on AMD's next-gen Ryzen 4000 'Vermeer' CPU & Radeon RX Navi 2X 'RDNA 2' GPUs in terms of launch info comes from ChinaTimes. The tech outlet reports that AMD plans to introduce its latest CPU/GPU products in the first quarter of Q4 2020. This would suggest an early October launch but once again, we aren't 100% sure if this is a hard launch or an announcement for AMD's next-generation portfolio.