What's New in Core Location

The Core Location framework enables geographical context in your app, letting you sort search results by proximity, provide turn-by-turn navigation, connect nearby users in social networks, and more. Master the Core Location APIs, and see how to leverage improvements to GPS positioning, WiFi locations, and region monitoring. See how new additions to Core Location like geocoding can extend and improve your app, and learn best practices to conserve power and increase performance.

WWDC 2011 - iOS