No it doesn't. Both revisions of CEA-861 require RGB 4:4:4 as the only mandatory color space and that isn't going to change since it would break compatibility. The electrical interface, link level protocol, DDC bus and EDID address, and EDID structure is 100% the same. If a HDMI transmitter is connected to a DVI sink, it will read a limited set of capabilities from the EDID data consistent with a DVI rev receiver and transmit only what the display supports. If a DVI transmitter is connected to a HDMI sink, it will treat the extended information in the EDID data as reserved since it has no knowledge of it and only transmit to it's capabilities.