What iPhone, iPad owners need to know About iOS 7

Apple is releasing its latest operating system for the iPhone, iPad and iPod Touch.
The system, iOS 7, will come installed on the new iPhone 5S and 5C models that is on sale. Owners of some older Apple devices also can download it to replace their current systems. But should they?
Before you jump in and upgrade, here's what you need to know about iOS 7.

What is iOS 7?
Apple's iOS is the