Now, designer Ran Avni has come up with a concept that allows users to swap back and forth between the old skeumorphic ways of Forstall and Jobs, and the expected flat design said to be favored by Jony Ive. Avni's concept, which can be seen in the video below, allows the user to change the settings to turn on iFlat.
Don't expect this to show up on iOS 7. With the Samsung Galaxy S4 nipping at the Apple iPhone 5's heels, changing the UI is one of the things that Apple is doing to try to recapture the excitement that surrounded the introduction and launch of the original Apple iPhone back in 2007.
source: YouTube via RedmondPie