Update: It turns out that Plastic Logic didn't actually demonstrate the flexible OLED prototype. They did show a presentation, in which they revealed that the current first-gen prototype is monochrome (red) and quite simple. They do intend to keep producing new demonstrators throughout 2014.
Novaled (owned by Samsung) and Plastic Logic announced that during 2014 they will demonstrate truly flexible, plastic, full-organic AMOLED displays. The first-gen display was demonstrated at the FlexTech conference in Phoenix last week. Plastic Logic hopes that the technology will be ready for adoption by display makers towards the end of 2014.
The two companies say that this is the first time an all-plastic AMOLED produced in a low-temperature manufacturing process is demonstrated. The display uses Novaled's PIN OLED materials and Plastic Logic's OTFT backplane. The display also used organic materials from Merck (probably the emitters).