According to the slide posted at Gamer.com.tw, AMD is planning to introduce Matisse-based chipset already at Computex. The slides have Gigabyte watermarks. This X570 chipset would be the first to support PCI Express Gen 4, a technology supported by Zen 2 and 7nm Vega. This is interesting because AMD was not very eager to confirm that consumer parts, such as Ryzen or Radeon RX, would also support PCIe 4.0. If this leak holds true, then it would be very strange if Navi and Ryzen 3000 were not capable of supporting PCIe 4.0 as well. The slide is clearly a few months ago, as B450 and Athlon 200GE series are still marked in red. That said, it is possible that the launch could be planned for a different event now.