According to Samsung, OLED isn't going to be ready for the mainstream for a while yet. Speaking at Samsung's European Forum 2009, Sang Heung Shin, vice president of Flat Panel Development commented that it will be: "at least four to five years before we see OLED in the marketplace."
Samsung was suggesting OLED TVs would be available this year when it showed of a 40in OLED TV a year ago. Shin explained that: "When it comes to OLED we have several issues to be overcome in terms of technology and production cost issues."
Considering Sony has had an OLED TV on sale - the XEL-1 - for over a year now and has yet to bring out a larger model - or even talk about dong so - suggests Samsung might have a point. OLED still looks too expensive to make a viable consumer offering right now.
Not that we don't all want 150in OLED TVs hanging on our walls, I'm sure.