Anyway, the interesting thing here is that VideoCardz is able to confirm that the B550 indeed has PCI Express 4.0 support, a feature that isn't present on the B550A. The latter was rolled out some time ago for OEMs.
We received a picture of the first B550 non-A motherboard from a source at SOYO (a company behind Chinese Maxsun). This motherboard is a very lost-cost option. It’s a Micro-ATX motherboard with a brown PCB, red PCIe slots and blue VGA connector, but a true icing on the cake is a dragon graphic.The launch of these boards is expected sometime in the first half of 2020.