There are big strides in OLED dyes, and the blue dye, which has the shortest life of the three dyes used, is upto 60Khrs (at 50% brightness).
OLED is a direct technology, rather than reflective or filtering technology, so it's closer to the old CRT's, or perhaps plasma, for picture quality, viewing angles, response times ....
Picture Quality will be significantly better than LCD based technology, once it's viable.
OLED can be layed across practically any decent surface, so you can make a shop window into a gigantic Television, but then still have it transparent when the TV isn't running.
Maybe OLED will turn into a niche market. shrugs.
But then, everyones going on about laser TV's .. so who knows?