While this rumour doesn't make much sense on it's own. If Apple is planning on expanding the iPhone brand to larger sizes, it will make sense to have a higher screen resolution available to maintain a sufficient pixel density. With Apple having ended sales of the the last non-Retina iPhone [3GS] in 2011. I wonder if the plan will be for future version of iOS to eliminate the original resolution and make the current iPhone resolution the "lower resolution", and introduce the second higher resolution suggested above for larger-screen devices.