Apple released iOS 6 with 200 new features, redesigned maps apps, improvements to Siri. Safari and Email application updated. Alsp iCloud tabs, Facebook integration, Apple’s new digital wallet Passbook app, a FaceTime over cellular data update, overall improvements to the user interface.
iTunes new version also available to download, you can update your firmware to iOS6 using iTunes application.
Jailbreaking iOS 6 currently not available, a new iOS 6 jailbreak will be released by the iPhone Dev Team shortly in the form of an update to RedSn0w. However, unfortunately, the new jailbreak will be similar to the one released for iOS 6.0 GM (Gold Master) in the sense that it will provide a Tethered jailbreak for limited devices.
How to do iPhone Jailbreak iOS 6 guide will be there when Jailbreaking released