ASRock has released its Phantom Gaming 6 motherboard. It supports X399 Threadripper CPUs, up to 128GB of 3400MHz OC DDR4 RAM, Phantom Gaming 2.5G and Intel Gigabit LAN. It also has 7.1 channel audio, 3 PCI-e 3.0 x16 slots, 3 M.2 slots and, of course, RGB.
https://www.notebookcheck.net/ASRock-launches-its-first-HEDT-TR4-socket-gaming-motherboard.368366.0.html