It seems that more and more analysts believe that Apple will eventually release two new OLED iPhone models in 2018. According to the latest report from Korea, Apple is now in talks with Samsung regarding the price of its flexible OLED panels for the smaller 5.8" iPhone Xs 2018 variant.
Samsung's OLED fab utilization rates are low as Apple cut its orders for the iPhone X displays in half. It seems that Apple now aims to take advantage of that and the iPhone maker is asking for a lower price for 2018 OLED panel. The reports suggest that Samsung will supply 100 million OLED panels to Apple in 2018 - 25 million for the 2017 iPhone X and 75 for the 2018 iPhone Xs. The larger (around 6.5") OLED iPhone (iPhone Xs Plus?) will use panels produced by LG Display.