This September, OLED no longer "three to five years away"

It's going to be very interesting to see how people will adapt to the power drain issue here.

White text on a black background is no longer what people are used to, but to maximize battery live on these devices that's the way to go.

The next hurdle would be software companies and website makers. Most text is black-on-white now, a regular display is pretty much a constant drain because the backlight is what consumes most of the power, an OLED will consume more as more pixels are turned on and brighter.

Green or Amber text on black anybody ?

I had some friends that made OLEDs in a MatSci lab last year. It was an incredibly complicated and drawn-out process, not to mention sensitive and nit-picky. Sure, automation would most of the problems, but I don't envy the people who have to make and test each revision.