https://wccftech.com/amd-b550-chipset-motherboards-ryzen-3000-cpus-launch-16th-june/

AMD's board partners have yet to release a cost-effective line of motherboards for the Ryzen 3000 CPU family. Currently, the vast majority of AMD Ryzen 3000 PC builders either consider upgrading to the new but expensive X570 motherboards or stick with their older AM4 socket motherboards while losing a small list of features that are only available on the new chipset. However, AMD will soon be unveiling its new B550 chipset based motherboards for mainstream and budget users that will definitely lead them to upgrade older PCs consider the value and performance proposition that the Ryzen 3000 platform as a whole has to offer.

Earlier this year, it was reported that AMD would commence mass production of its B550 and A520 chipsets in Q1 2020. We got to see revised B550A motherboards specifically developed for the OEM market but they are closer to the B450 chipset in design, offering limited PCIe Gen 4.0 capabilities compared to what B550 will offer.