The economy has no doubt slowed investment in OLED. Nice thread at AVS on this. Lots of talk, and lots of industry announcements. Look for it to move into larger smart phones, maybe even the next iPhone. Then iPad style units and laptops.
Oh, I think OLED will get better on pricing. It offers the potential of being built up with ink jet style technology. And it doesn't require backlighting. And fewer layers. Plasma has it's pricing and fill factor limits, based on the physics of glass tubes. It's a mature technology, as demonstrated by so many companies bailing and leaving the field. Kinda upsetting, when Pioneer, with the best, Kuro, abandons the technology.
I think OLED, or some other forthcoming technology, will drive display prices down to the "cheap" level, like where they were at the end of the CRT era.