According to Intel RST 16 documents. There are Intel X399 HEDT Chipset with native USB 3.1 Gen 2 and Intel Z390 Chipset on the paper.
Our Skylake X Skus only will working with X399 HEDT Chipset not Kabylake X.
Intel also planing to launch 9th Gen Core Processor and 8 th Gen Core X Processor after Computex Taipei 2018.
*Here is the link.
*
https://downloadmirror.intel.com/27681/eng/Release_Notes_16_0_2.pdf
W11CANARY 26200.5001 Core i9 7980XE 02007108 MCE ME 11.12.95.2499 R6E Modified BIOS 3801 SAMSUNG OG9 FW 1019.0 SSD 970 EVO PLUS 1 TB x 3 NVIDIA RTX 4090 GAME READY 552.22 64GB GSKILL DDR4 3200MHz JBL 9.1 Sound Bar DTS-X