The GDR3 update coming to Windows Phone 8 includes a few unpublicized features, most of them involving data management; take the Data Sense app for example. This app allows users to keep track of each month's data usage so that you can make sure that you don't end up paying overages or getting throttled. And we know that no one likes to get throttled. The app will even let you know which of your apps are consuming the most data each month...Source: http://www.phonearena.com/news/GDR3-update-includes-some-unpublicized-features_id49009
