The interesting part of this story is that the same micro-LED display that Apple is rumored to be working on, is the catalyst behind the holographic screen. Using specialized software and hardware, the micro-LED technology can allow iPhone users to view holographs that are visible to the naked eye.
This is not science fiction. Using a micro-LED projector, display producer Ostendo demonstrated some of the concepts behind the holographic screen in a video from 2014.
While Apple hasn't confirmed any of this, keep in mind one important part of the whole equation. How much would Apple have to raise the price of the iPhone to incorporate this technology into the device?
source: iNews24 (translated) via BGR