There’s a new X399 motherboard chipset coming this year from a major chip manufacturer. No, we’re not talking about a revamped version of AMD’s X399 chipset used in its Ryzen Threadripper processors, but an X399 chipset from Intel that will be used in its own 2018 family of HEDT processors. 
A document on Intel’s website [PDF] was recently

Source: Hot Hardware – Intel Document Confirms X399 Chipset For Coffee Lake And Cannon Lake HEDT Processors