It is official our fellow Australians! Optus just tweeted to let you know that Android 4.1 JellyBean rollout has begun this today and it will spread to all Samsung GALAXY S II owners over the next week. The new software update will upgrade your phone from Android 4.0.4 to Android 4.1.2 and it is available over the air or through Samsung Kies software. Make sure you have the latest version of Kies before plug-in in your smartphone. Enjoy!