Beta 4, labeled as build 11A4435d, comes exactly 21 days after the release of beta 3. A week later than iOS 7 betas 2 and 3 which were released every two weeks like clockwork.
The new beta release includes a number of enhancements and changes, including a redesigned lock screen, improvements to Notification Center and a cancel button on the search screen according to MacRumors.
- The lock screen contains a new Slide to Unlock icon and animation which make it slightly more obvious. It also includes new bar icons to expose Notification Center and Control center.
- Notification Center now supports swiping left and right to switch between Today, All and Missed. There is also a new notification for completed uploads.
- Perhaps the most immediately visible changes are to the Phone app, including refined Answer, End, Decline, Remind Me and Message buttons.
- Another new feature is the ability to set up a completely new Apple TV from an iPhone running iOS 7.
Other news features in iOS 7 beta 4, including changes to Siri, Mail and Messages, are being tracked at MacRumors.