I know this has been said, but it bears repeating. I've been seeing a ton of posts about the so-called 300dpi limit for a display to be retina. Many of these have been recently with talk of a larger screen iPhone. Well, hate to disappoint, but theres no such thing as a 300dpi limit for retina. It doesnt, and never did, exist. In the iPhone 4 keynote last year, which you can go watch right now, Steve said that if you hold a device the size of the iPhone AT 12 INCHES from your face, the eye will not distinguish pixels past 300DPI. This is a 3.5' display held 12 inches from your face (And even that claim was challenged) The calculation for "Retina" depens on pixel density, screen size, and distance from face. If the iPhone 5 has a 4" display, it'll be assumed that you'll hold it 14-16" from your face, thus the DPI count can be lower (270-280) and still be Retina. Hope that helps.