Apple Seeds iOS 7 Beta 6
Apple has unexpectedly released iOS 7 beta 6 today. Following their two-week schedule it should have been released this upcoming Monday. This update only weighs 13.5 MB on the iPhone 5, not a lot for an update, suggesting that this may fix an urgent bug.
Apple has also noted on the Developer Center page that this update fixes an issue with iTunes in the cloud, where some purchases may download or play different items.