
The backdrop may look like a random bands of color, but each of the bands seems to be made up with overstretched versions of the main iPhone homescreen apps icons. Is this a clue that "iPhone 5" will be a stretched or taller version of previous models?
You will find the Game Center, and those of the iTunes and Music apps too:


Source: Apple's Yerba Buena Decoration Shows Stretched iOS Icons, Possibly Hinting at Taller iPhone 5 - Mac Rumors
Images credit by Macrumors