What's New with Multitasking

It's critical to keep people's content as up to date as possible. Learn how new APIs in iOS 7 will let your applications fetch new data in the background to keep people up to date. See techniques you can use to perform operations in the background without draining the user's battery. Understand how you can keep your app's snapshot up to date so users see the latest content in the new multitasking interface in iOS 7. All these techniques will let you build an app that feels alive and always up to date.

WWDC 2013 - Session 204 - iOS