TechPowerUp got to see the ASUS ROG Zenith Extreme Alpha X399 at CES. This new flagship motherboard supports AMD's second-gen Ryzen Threadripper WX and X processors and has a very clean design. The board has a large I/O shroud, some heatsinks with integrated RGB LEDs and a small display that shows the clockspeed.
Here's a brief overview of the board's main specs:
The I/O shroud which runs the entire length of the board is contiguous with a large RGB LED studded shroud covering the board's two M.2-2280 NVMe slots between PCIe slots. You get a U.2 port, and additional M.2 NVMe slots through the DIMM.2 riser accessory that's included with the board. ASUS has designed the CPU VRM of this board. It's still 10-phase on paper, but uses a high-end controller; and is tuned for overclocking the beastly Threadripper WX processors. Another killer feature with this board is 10 GbE wired Ethernet, driven by an Aquantia AQC-107 controller. You still get a 1 GbE driven by an i211-AT. ASUS appears to have done some cost-cutting with the WLAN card, though, which now only supports up to 1.73 Gbps 802.11ac MU-MIMO, compared to the original Zenith Extreme's 802.11ad draft controller with 4600 Mbps top-speed. The onboard audio solution is unchanged.