Kipon just informed me that next week (at the CP+ show) they will announce the world's first "CANIKON" mirrorless autofocus lens adapter:
"World first "CANIKON" autofocus adapter from KIPON would be exhibited at CP+2019 YOKOHAMA in Japan. This adapter is for using Canon EF, EF-S, Sigma EF mount, Tamron EF mount lenses on new Nikon Z mount full-frame cameras, can realize autofocus functions."
Kipon adapters are sold at Adorama, Amazon and eBay.
Via NikonRumors