Samsung has committed to bringing Android 4.3 Jelly Bean to its Galaxy S III former flagship and the rollout should start in a few weeks' time. If you know your way around flashing a ROM manually, though, you don't even have to wait that long as a pre-release version of the Android 4.3 build has just surfaced. The beta version is reportedly stable enough to work as a daily driver, although it...
Source: http://www.gsmarena.com/android_43_for_samsung_galaxy_s_iii_leaks-news-7118.php