Apple iOS 5 beta 4 now available for developers

Apple has finally released version 5 of iOS. The iOS v5 is currently in beta phase and only available to developers. This version of iOS has over 200 new features like iMessage, notification center etc. It requires itunes10.5 to sync your device with this version. The major addition is ability to update on air but device still requires re-sync after update. Read more here : http://9to5mac.com/2011/07/22/apple-seeds-ios-5-beta-4/