I readily ignore prototype displays as meaningless. We say 100+" LCDs years ago (5+) at CES and still, years later, the biggest you can really buy is 84".
Therefore, the biggest OLED is a 55".
I do believe, based on what I've seen in the works, that 8G OLED manufacturing will get real in the coming years. There are breakthroughs in printables that are on the horizon and could start to show in lines by 2015 / 2016. At that point, OLED could begin its assault on the cost curve. It's really up to the manufacturers to decide to go all in on printables and stop wasting time with SMS and, quite frankly, LG's method, which clearly has lost all credibility about being easy/scaleable at this point. It was demoed at CES 2012. If it were simple, they'd already have made meaningful progress. The fact is they haven't.
There is no difference in HDMI cables. If you can see the picture without visible dropouts or sparklies, the cable is working at 100%. No other cable will display a better version of that picture. You're simply wrong if you think there is a better digital cable than one that is already working.