USB-C devices will be able to output to HDMI with new standard - The Verge
Plugable USB 3.1 Type-C to HDMI 2.0 Adapter – Plugable Technologies
Blackmagic Design Micro Converter SDI to HDMI
Tripp Lite USB C to HDMI Video Adapter Converter 4Kx2K M/F, USB-C to HDMI, USB Type-C to HDMI, USB Type C to HDMI 6in - - U444-06N-HD4K6B - USB Adapters - CDW.com