Since Apple adopted a flexible AMOLED display for the Watch, people have been speculating that the company is also looking into using OLEDs for their smartphones and tablets. Reports that Apple is talking with both Samsung Display and LG Display regarding a future OLED display supply deal surfaced in past weeks.
Yesterday Reuters cited the Electronics Times saying that SDC and LGD are close to signing an agreement with Apple. The two display makers will invest $12.8 billion together to increase OLED capacity for Apple. Reuters says that Apple will likely provide some funding to LG and Samsung, and Samsung will get the larger share of the OLED volume.
It seems that these reports are getting more credible. As OLEDs are becoming better and better than LCDs, and as flexible OLEDs are entering the market and changing the design options for mobile phones, it's highly likely that Apple will have no choice but to switch to OLED eventually. Apple requires a huge production capacity - so it makes sense for Apple to talk to suppliers several years in advance.