HDMI version 1.4a with support for 3D video, Audio Return Channel, Deep Color, x.v.Color, auto lip-sync, and HDMI-CECfrom the Crutchfield web site: http://www.crutchfield.com/S-Cye0n3X4VAg/p_642AV8801/Marantz-AV8801.html
the new AV 7702 is the same price and here is some discussion on that: http://www.avsforum.com/forum/90-receivers-amps-processors/1708666-marantz-av8801-vs-7702-a.html
This is what I was referring to when I said interesting, sorry.