ASRock certainly is ballsy, they figured they could show one X299 motherboard, but no, below the fold photos of the ASRock X299 Gaming K6, X299 Formula OC, X299-E ITX/AC, X299 Killer SLI/AC, X299 Professional Gaming i9.
The X299 platform will bring quad-channel DDR4 support to compatible 14nm processors and 40 PCIe 3.0 lanes with Skylake-X procs from 6 to 18 cores. Kaby Lake-X procs will support dual or quad channel DDR4 and just 24 PCIe 3.0 Lanes. The new platform also offers support for Intel Optane and quad channel DDR4-2667 MHz memory. X99 will be based up-on a new socket, LGA 2066 that means that once again you have to purchase a new (X299) motherboard.
Below an overview of a rather diverse X299 range on display here at Computex. Check the descriptions as ASRock is going wide and diverse from simple and affordable up-to expensive with 5 Gbit LAN and AC WIFI included. Nice.