Probably the biggest change on the iPhone 5, with deep implications in the app ecosystem itself, is its widescreen display; while maintaining the “Retina” branding for the screen, Apple bumped the resolution, in height, all the way up to 1136 pixels. Until developers add support for the bigger screen real-estate, older applications will run in the center of the screen, adding black bars to the top and bottom.
We, however, know that the developers are quick to react; we’ve seen this when the New iPad was launched with its own “Retina” display. However, Apple is now requiring all developers to include widescreen screenshots for those apps which are updated for the iPhone 5. This is a sine qua non condition, meaning that if there is no proper screensnap attached, the application will not go through approval, being stuck with a “Missing Screenshot” status; the app will not be reviewed. Check out the letter sent out above.