Samsung is seeing much higher demand for the Galaxy S6 Edge, and they cannot produce enough flexible OLEDs. According to the OLED Association, Samsung Display will triple its flexible OLED production capacity - from around 3 million monthly panels to about 8-9 million by the end of the year.
Interestingly, while earlier reports suggested that SDC started producing at its new 6.5-Gen A3 flexible OLED fab sooner then planned, The OLED-A says that Samsung decided to first expand production at the older 5.5-Gen A2 flexible fab - mostly because yields at the smaller fab are better.
The OLED-A further says (and it makes sense) that following the S6 Edge's success, Samsung decided to adopt a flexible OLED in their upcoming flagship phones, the Note 5 and the Galaxy S7. Samsung believes that the competition is catching up to the Edge screen, and so they are also developing foldable panels - but this isn't really news.