The XS Max successor may be thinner, as Samsung lends Apple its in-cell touch OLED tech
Last year, almost a third of the price tag to produce an iPhone X went to Samsung for the OLED display, and Apple was looking for ways to cut that ratio so that it can be more flexible with the final retail pricing of the XS.
To reach Apple's lower tag demands, Samsung apparently offered to supply the Y-Octa panels with a touch layer integrated directly in the screen that it uses for the S9+. These are thinner, lighter, and above all, cheaper to produce than other OLED panels, though the yield was not enough for Apple's mass quantities.
Today, Korean media is reporting that Samsung will indeed lend the Y-Octa technology to Apple but apparently just for its top-end 2019 model, the iPhone XS Max successor, as that's all Samsung will be able to produce. After all, the Galaxy S10 quartet and the eventual Note 10 will need some in-cell touch love, too.