Machine Z390 Aorus Pro Wifi, i9-9900K, Opencore 0.6.3, Radeon RX580, Fenvi T919.
Catalina on NVME drive, Security Update 2020-001. Went smoothly with no hiccups and no user input required at each of the 3 reboots. Everything seems to be working (App Store, iMessage, Facetime, iCloud, airplay...