These are the two motherboards from ASUS revealed by the USB-IF database:
VideoCardz reports the USB-IF leak listed three chipsets in total:ASUS PRIME TRX40-PRO ASUS ROG STRIX TRX40-E GAMING
The original leak from USB-IF listed three chipsets: TRX40, TRX80, and WRX80. We are unable to tell what these numbers mean at this time, but one could guess they are going to offer more memory slots or PCIe lanes depending on the chipset and processor used. The WRX80, on the other hand, sounds like a workstation board. Whether these are more productivity-oriented boards or supporting higher core Threadripper CPUs, we don’t know yet.