The story is the same, just this time the insiders have more specific numbers around 3-4 million OLED displays will be manufactured by the time the iPhone 8 launch. And thats not nearly enough.
For comparison, the iPhone 6 and 6s sold a combined 10 million units in three days. Numbers for the iPhone 7 are in the same ballpark. So these 4 million units (or less!) are going to fly off the shelves in no time, especially considering that this is the more desirable iPhone (the 7s and 7s Plus will be relatively small, iterative updates).
The OLED panels are currently manufactured by Samsung Apple reportedly ordered as many as 70 millionunits. LG Display is also keen to build OLED displays for Apple, but Cupertino leadership may be looking to strike off on its own with microLED displays.
Of course, the OLED display is only part of the new features Apple is reportedly looking to bring to the new iPhone and each such feature new 3D Touch, new 3D-sensing cameras, etc. – brings its own supply and implementation headaches.