Category 2 HDMI 1.3 cables only.
Unfortunately, Acorrding to Sony and Denon your current HDMI equipped surround sound receiver will not pass the new FHD3D signal and no upgrades are possible. A system called EDID (Extended Display Identification Data) currently handles communications between your TV, receiver and source components and it works fine. However, when your new 3-D television communicates that it is an FHD3D television, the receiver will not understand because the 3D ID was not part of the standard when your receiver was designed. The receiver will shut off the HDMI signal and your new 3-D TV screen will go black.
Your solution will be to replace your receiver with a new one thatâ€™s 3-D compatible or use a workaround. An example would be something like Panasonicâ€™s upcoming 3-D Blu-ray player. It has a separate audio only HDMI output so one would hook-up the 3-D player's HDMI direct to the TV for the video portion and hook-up the HDMI protion to the current sound reciever to still get the audio aspects of the source.
There are a lot of but's going on right now. It's unfortunate that early adopters of this technology that don't have money to burn could end getting the short end of the stick. We will have to see what comes down the road.