The upcoming Intel Z390 chipset is designed for unlocked processors and could arrive in just a few weeks, at the Computex 2018 trade show in Taipei. However, the page containing the technical details was removed by Intel shortly after it became public, so the Z390 might get a few changes until its release.
https://www.notebookcheck.net/The-Intel-Z390-chipset-now-almost-official-with-Wireless-AC-Bluetooth-5-0-and-USB-3-1-Gen-2-in-tow.303360.0.html