Elka got the DP8K certification for its USB 3.1 Type-C to DisplayPort cable in November 2018. It is now available for mass-production starting  January 2019.

This cable is designed for bi-directional data transmission. It will be the proper way to connect a USB-C device to a DP monitor or connect a DP device to an Ultra HD monitor embedded with a USB-C port.    

Features 
•  Supports DisplayPort Alt Mode over USB-C 
•  Compliant with DisplayPort 1.4 HBR3 
•  8K display support with connection up to 2 meters
•  Supports bi-directional data transmission
•  No extra drivers needed

Specs