Apple released iOS 7.1.2 today, bringing a variety of bug fixes to iPhone and iPad users. The update, available over-the-air, improves iBeacon stability and connectivity (issues with the iBeacon APIs had been reported by a variety of hardware makers and app developers over the past few months), corrects a problem with the data protection class of Mail attachments (first reported in May), and includes fixes for third-party accessories.
Apple released the first major update to iOS 7, version 7.1, in March. iOS 7.1.2 is available now through Software Update on iOS and OS X (via iTunes).