Apple released iOS 6.1 on January 28, 2013 with improvements and bug fixes. The listed improvements are:
- LTE support for more carriers (for iPhone 5, iPad Mini, and iPad 4th Generation only)
- Purchase movie tickets through Fandango with Siri (USA only)
- iTunes Match subscribers can now download individual songs from iCloud
- New button to reset the Advertising Identifier
Go to Settings –> General –> Software Update to Download and Install the latest version of iOS 6.1 for your iPhone, iPad (Mini), and iPod Touch.