Samsung has just started seeding the Android 4.1.2 update for the Galaxy S III. It's available over-the-air and the first country to get it is Poland. Other countries should join the roll out very soon, though.
The update brings lots of new features to the Galaxy S III, which were introduced with the Galaxy Note II phablet. Here is the complete changelog:
Android version 4.1.2
Multi-View
Page Buddy
New Gallery App (Same as in Note II)
Notification Panel (Notification Panel can now be customized)
Brightness Slider in Notification Panel Can Now Be Disabled
Smart Rotation (Screen Display adjusts to your angle of sightings)
Paper Artist App
Group Cast App
The continuous input claimed to come with the 4.1.2 version actually was available within the original 4.1.1 update.
The Galaxy 2 10.1 Wi-Fi slate is also getting some Jelly Bean treatment today. Samsung has started the update process for the Ice Cream Sandwich-running slate and if you live in the United Kingdom you can update your device over-the-air or via Kies.
