While I am waiting to recover my iPhone 4S from a failed iOS 6.1 upgrade, we might as well read Apple's iOS 6.1 press release.
CUPERTINO, California—January 28, 2013—Apple® today updated iOS to version 6.1, adding LTE capabilities to 36 additional iPhone® carriers and 23 additional iPad® carriers around the world, so even more iPhone 5, iPad mini and iPad* with Retina® display users can experience ultrafast wireless performance** to browse, download and stream content at blazing fast speeds. To date, iOS users have uploaded over nine billion photos to Photo Stream, sent over 450 billion iMessages and received over four trillion notifications.
“iOS 6 is the world’s most advanced mobile operating system, and with nearly 300 million iPhone, iPad and iPod touch devices on iOS 6 in just five months, it may be the most popular new version of an OS in history,” said Philip Schiller, Apple’s senior vice president of Worldwide Marketing. “iOS 6.1 brings LTE support to more markets around the world, so even more users can enjoy ultrafast Safari browsing, FaceTime video calls, iCloud services, and iTunes and App Store downloads.”
iOS 6 features include Siri®, which supports more languages, easy access to sports scores, restaurant recommendations and movie listings; Maps with Apple-designed cartography, turn-by-turn navigation and Flyover view; Facebook integration for Contacts and Calendar, with the ability to post directly from Notification Center, Siri and Facebook-enabled apps; Shared Photo Streams via iCloud®; and Passbook®, the simplest way to get all your passes in one place. Additional updates in iOS 6.1 include the ability to use Siri to purchase movie tickets in the US through Fandango, and iTunes Match℠ subscribers can download individual songs to their iOS devices from iCloud.
iOS 6.1 is available as a free software update today. iOS 6.1 is compatible with iPhone 5, iPhone 4S, iPhone 4, iPhone 3GS, iPad (third and fourth generation), iPad mini, iPad 2 and iPod touch (fourth and fifth generation). Some features may not be available on all products.
You can read the complete iOS 6.1 press release on the Apple PR website.