This looks kind of cool. It’s just a little something in the iOS 7 beta.
When you first go to the Settings, App icons have to be retrieved. Instead of showing an empty space, there is a wireframe app icon. It’s not clear if they are part of the design, or simply placeholders. Looks to us like part of Apple’s design.
It somewhat reminds us of the lined look of Apple’s keynote opener:
You can check out some more of our iOS 7 news here.