There are many rumors that Apple wants to reduce (and even break) its relationship with Samsung. There are also many rumors that the iPhone of the future will use OLED displays. Everything seems to indicate that they will reduce dependence on the Korean company, since TSMC is expected to manufacture all the processors for the iPhone 7, but Apple will remain united with Samsung for the iPhone screens of the future, when the Apple smartphone makes the move from LCD screens to OLED a reality.
According to Digitimes, the new screen will be one of the novelties that will be presented in 2017, in the iPhone that we hope will be called iPhone 7s. Samsung would share 100% of OLED screen orders with LG, being LG Display the main vendor of this component, although it is expected that Samsung will receive increasing orders over time. The officially known reason for Apple to order more from LG is that those in Cupertino can negotiate better prices with this company, although Apple's aforementioned interest in moving away from Samsung may also have something to do with it.
Right now, Samsung offers better prices than LG manufacturing OLED screens and, in addition, they are investing heavily to increase their infrastructure, which would allow Apple's intimate enemy to be more productive and (perhaps) further improve the price of its components. We will still have to wait two years to know how Tim Cook and company share the screen manufacturing pie, and more if we consider that there are other companies that want to enter this bid.
With all this, it is unknown how Apple is going to use the "secret" plant (in quotation marks because, as the user Armando pointed out in that article, it has little secret if we have all found out) that they have acquired recently to make thinner and more efficient screens. As always, time will tell us.
Gentlemen, iPhone 7 comes with oled screen!