Gets some extra features. It's on the web so http://www.avsforum.com/forum/139-display-calibration/1489147-hdmi-2-0-announced.html repeats that at 2.0 you get 60 FPS and lesser gets 30.
Sorry I would not get a receiver that isn't both 1.x and 2.0a ready.
I was wondering does the HTR-3066 Yamaha a/v receiver support HDMI 2.0. According to the website "This AV receiver provides advanced HDMI features including Ultra HD (4K) pass-through." But I know that HDMI 1.4 also supports 4K. Thank you for any helpful answers.