Android latest version, Jelly Bean have been announced by Google on 27 June 2012 where it is an incremental update with the main focus of improving the user interface, both in terms of functionality and performance as mentioned at Google I/O. For this moment, there is only one device from Google (Google Nexus 7) which will be running Android 4.1 Jelly Bean by default.
But for those who already own the latest Samsung Galaxy S3, you are , most probably, the second lucky person to run your smartphone with this latest Android version. The official update to Android 4.1 Jelly Bean have not been announced by Samsung but I believe your wait will not be too long. [Stay tune to be notified of latest update on Samsung Galaxy S3]
Android 4.1 Jelly Bean Features:
Source: Wikipedia [History of Android]
Additional Information: Adobe Won’t Support Flash in Android 4.1
Flash is no longer supported for Android 4.1 as announced by Adobe earlier. “There will be no certified implementations of Flash Player for Android 4.1”, write Adobe on its official blog recently. Adobe also recommend of “uninstalling Flash Player on devices which have been upgraded to Android 4.1”.