The unlocked/international model of the Samsung Galaxy S III received a second update today bringing the usual bug fixes, improved stability and a much-needed brightness slider to the notification menu. If you are always worried about saving your battery life, the new widget will definitely help you adjust the brightness level of your display by either using the slider or simply putting it in the “Auto” setting. The 72.68 MB update is both available as an over-the-air file and via Kies. In case you didn’t get the prompt, you could always head to your settings menu and manually force the update.
via Android Forums