What's this OLED thing? Some new revolutionary panel technology?
Well Google is your friend, OLED is Organic Light Emitting Diode and it has been in development as the next best thing in the area of screens for some time now.
Lots of benefits, true black levels (leds are just turned off), better energy consumption, thinner, but there is some talk of burn in issues.
There was a few years ago some development in Laser screens with very interesting benefits of its own (most notably no quality fall off during the years of usage) but it seems that at least for now that has ceased.