After releasing a lot of iOS 6 beta versions finally iOS 6 Gold Master (GM) is available for registered developers via iOS Dev Center whereas final iOS 6 release is expected on 19th September.
iOS 6 GM is compatible with iPhone 4S, iPhone 4, iPhone 3GS, iPad 3, iPad 2 and iPod touch 4G.
iOS 6 is integrated with 200+ new features like in-depth Facebook integration, improved Siri, New 3D Maps and many more.
Download iOS 6 GM
YouTube for iPhone and iPod Touch
Apple iPhone 5 Price, Availibility and Networks
iOS 6 New Features