When the iPhone was first launched in 2007, it was designed to support one screen resolution, and nothing more. Later, with the launch of the iPad and the Retina display on the iPhone 4, Apple had to optimize its concrete user interface elements for larger, higher resolution displays. Today, we have not only a Retina display on the iPad, but a rumored 4-inch iPhone as well, likely debuting in the fall.
With all of these different screen resolutions to handle, Apple has stealthily implemented a feature into iOS 6, one which will allow developers to intelligently scale their apps to fit nearly any screen resolution.
