No HDR with Accell USB-C to HDMI 2.0

Confirmation from Accell's tech support state's that their USB-C to HDMI 2.0 adapter does not support HDMI 2.0a-b and therefor cannot send HDR metadata from your computer to an HDR compatible TV/Monitor. The company is 'working on adding the capability' so all hope is not lost.
Whether or not the new all USB-C MacBook Pro can output an HDR signal from it's Radeon Pro 560 GPU under Windows 10 Bootcamp is yet to be determined as well.