A list of Asus motherboards that will sport the upcoming Intel Z390 chipset were revealed in an Asus support document. The Z390 is spread across the Maximus XI, Strix, Prime, TUF, and Dragon brands.
https://www.notebookcheck.net/List-of-new-Asus-Z390-Coffee-Lake-S-Refresh-motherboards-revealed.318686.0.html