ASUS already promotes AMD Ryzen 4000 Desktop APU series - VideoCardz.com
MSI Confirms AMD Ryzen 4000 'Zen 3' Support On 400-Series Boards
AMD's Ryzen 4000 "Vermeer" CPUs Won't Support B450 Motherboards, Only B550 and X570 will Work w/ Zen 3 | Hardware Times
AMD brings affordable Ryzen 4000 and Ryzen 5000 series processors for PC build
AMD Ryzen 4000 Zen 3 will be compatible with Socket AM4, but it is end of the road for X470, B450, and below motherboard owners - NotebookCheck.net News