https://www.pcgamer.com/here-comes-the-barrage-of-z390-motherboards-for-intels-9th-gen-cpus/

Intel's launch of new 9th generation Core processors is accompanied by a new chipset, and all of the usual motherboard players have announced a new round of boards built around it.

The new chipset is called Z390. It's an incremental update to Z370 rather than a complete overhaul, though it does offer a few new features. Specifically, Z390 introduces native support for USB 3.1 Gen 2 connectivity (rather than having to offload USB 3.1 chores to a third-party chip), integrated 802.11ac (Wireless-5, under the new naming scheme) support, integrated SDXC (SDA 3.0) support, and a newer Intel Management Engine (IME) firmware revision.