Mark Gurman at 9to5Mac:
…Apple is preparing to make another significant screen adjustment to the iPhone. Instead of retaining the current resolution, sources familiar with the testing of at least one next-generation iPhone model say that Apple plans to scale the next iPhone display with a pixel-tripling (3X) mode.
If this pans out, there will still be the same 16:9 display ratio, but the base resolution of the iPhone (568 * 320) would be tripled to 1704 * 960. That would put it above Apple’s threshold for a Retina quality display at both the new rumoured 4.7-inch (and even 5.5-inch) display sizes.
Hear that? That odd background noise? That’s the sound of a bunch of developers all scratching their heads this morning, trying to figure out how this change is going to work with their apps.