The B650 has it optional.
Most affordable motherboards for Ryzen 7000 processors will not support PCIe 5.0.
Reportedly, the A620 chipset will receive only eight PCIe 4.0 lanes, while the B650 optionally offers PCIe 5.0 support implemented in the new CPUs.
Also, the A620 will not support overclocking the processor, but it will allow overclocking the RAM. Another difference will be the support for USB 3.2 Gen 1 ports versus the older chipset’s USB 3.2 Gen 2 ports.
Recall that it is expected that the A620 chipset will exist in two versions, and the second will allow manufacturers to produce even more affordable boards .
The source of information turned out to be an insider chi11eddog, who has already shared confidential data between AMD and MSI.