In Short

iOS 6, code-named Sundance, was introduced by Apple during the WWDC 2012 keynote on June 11 and was released on September 19, 2012. It was notable for its support of 16:9 displays for the then-new iPhone 5, for a new, Google-free version of the Maps app, Passbook, Facebook integration, Siri enhancements, and more. iOS 6.1, code-named Brighton, shipped on January 28, 2013. The latest release for most devices was iOS 6.1.3 on March 19, 2013. iOS 6.1.4 shipped for iPhone 5 only on May 2, 2013, and iOS 6.1.5 shipped for iPod touch 4 only on November 11, 2013.