The names of three new Gigabyte motherboards have been revealed bearing the "X499" designation. It's believed at least one of the boards will be capable of offering 10 GbE network data rates. AMD is expected to introduce the X499 chipset specifically for the 3rd Gen HEDT Ryzen Threadripper processors.
https://www.notebookcheck.net/Gigabyte-preparing-X499-motherboards-for-3rd-Gen-Ryzen-Threadrippers.415593.0.html