Apple today at the Lets Talk iPhone event announced that the iOS 5 will be available for public release on the October 12. Just after the announcement Apple has just now moments ago seeded the Golden Master (GM) edition of iOS 5. The Golden Master edition is the final edition which will be released to public until some fatal bug or any other error is discovered in it.
iOS 5 Gloden Master Build 9A334 is now available for download for all developers registered in the Apple Developer Website. If you do not have one currently you can buy one for $ 99 per year. With this account you can get access to all developer seeds and also access developer tools and notes which are essential for every Apple Developer.
Apple in the developer website have mentioned that in order to install this update you must use iTunes 10.5 beta 7. The update is currently not available in OTA updates but you will have to download and install it from the scratch. Apple recommends all users to back-up their device via iCloud before updating their device.
Apple also posted the GM seed of the Xcode 4.2 as well. It is also mentioned that that the GM seed can now be used to submit iOS 5 applications to the App Store for review.
Apple at the Lets Talk iPhone event announced that the iOS 5 and iCloud will be released on October 12th. The iCloud service is going to be free for iOS 5 and OS X Lion users.