Intel's upcoming Z390 chipset could be just a rebadged Z370 if the grapevine on the street is to be believed. The Z390 was expected to bring support for the 8-core 'Coffee Lake-S' CPUs along with an integrated USB 3.1 Gen2 Host Controller and Intel Wireless-AC 802.11ac with Bluetooth 5 but it looks like Intel had a change of heart owing to increased strain in 14nm production.
https://www.notebookcheck.net/Upcoming-Intel-Z390-chipset-to-be-just-a-rebadged-Z370.310736.0.html