Biostar has announced the 300 and 400-series motherboards that will offer compatibility with AMD's upcoming range of Ryzen 3000 desktop processors. There are models from the A320, B350, B450, and X470 lineups that will be able to welcome the 3rd Gen chips. A promo image has also shown off the "AMD Ryzen 3000 Desktop Ready" logo.
https://www.notebookcheck.net/Biostar-publishes-list-of-3rd-Gen-Ryzen-compatible-motherboards-and-reveals-AMD-Ryzen-3000-Desktop-Ready-logo-in-the-process.420628.0.html