It appears that MSI TRX40 motherboards have been leaked (not all boards though). MSI TRX40 PRO Pictures leaked by Komachi showcase the upcoming HEDT series from MSI for 3rd Gen Ryzen Threadripper. The PRO series is designed for productivity, with stability and expandability in mind. That's why this board has four full x16 PCIe slots (and let me remind these are first PCIe 4.0 HEDT boards). There are two variants of these boards, one equipped with a WiFi6 module and the other comes with a 10G card.