According to latest rumors by Yuri Bubliy, the upcoming AMD Ryzen 5000 series Zen 3 Vermeer Desktop processors will be launched in mid-late October. Ryzen 9 5900X & Ryzen 7 5800X will be firstly launched, release date expected on October 20th, 2020, while Ryzen 9 5950X, Ryzen 7 5700X, Ryzen 5 5600X will be launched in a late date.
Zen 3 – 20th October (5800X/5900X)
Navi 2 – 15-20th November
This is old information, but I can see that AMD has not adjusted the plans.
— Yuri Bubliy (@1usmus) September 30, 2020