There are reports that Sony is increasing its LCD panel purchases from LG Display. Sony stopped their partnership with Samsung (Samsung bought Sony's stake in the LCD joint venture). An LGD official is quoted saying that future talks will also cover OLED TV panel outsourcing.
LG Display is currently gearing up to start producing 55" OLED TV panels. Their 8.5-Gen pilot line will produce around 48,000 monthly panels - which probably won't be enough to outsource to Sony. But LGD already decided to increase their OLED TV panel capacity (by building a new fab or perhaps converting an LCD line). This will take at least a year and half.
Sony is no longer making consumer OLED TV, but the company is still developing and producing large OLED panels used in professional broadcasting monitors. It seems that the company has made the same mistake it made with LCD displays and will have to rely on outsourcing for its OLED panels. It's a shame as the company used to be at the forefront of OLED TV research back in 2007.
LG's first OLED TV will be the 55EM9600 - a 55" Full-HD OLED TV featuring 100,000,000:1 contrast ratio and fast response time (1,000 times faster than LCD according to LG). The panel is only 4mm thick, and the whole TV weighs just 7.5Kg. The TV is based on LG Display's Oxide-TFT white-OLED with color filters (RGBW) OLED panel.