12 New and Hidden Settings in iOS 7
12 New and Hidden Settings in iOS 7 | The Mac Observer
New settings in iOS 7 | Jim Dalrymple
The major changes in iOS 7 have been written about for a few months, but Dave Hamilton focused his attention on some lesser known settings that could be helpful to you.
12 New Settings and Features in iOS 7 | John Gruber
Good list from Dave Hamilton at The Mac Observer.