The update has also been released for the Samsung Galaxy S4 with the Samsung Exynos processor, and the update has apparently rolled out in Indonesia and India for the device.
The Samsung Galaxy S4 Android 43 update brings a wide range of new features to the handset, which include support for the Samsung Galaxy Gear smart Watch, OpenGL 3.0, and also Samsung’s new mobile security suite, Samsung KNOX, you can see what is included in the update below.
Samsung Galaxy S4 Android 4.3 Update:
OpenGL 3.0 Support
GALAXY GEAR Support
TRIM Support (Makes the device much faster)
Samsung KNOX Implementation (KNOX bootloader and dedicated application)
Samsung Wallet comes pre-loaded
Improved RAM management
Improved Display colour reproduction (Display looks much sharper than before)
Improved TouchWiz Launcher (Much less launcher redraws and less lag)
New Samsung Keyboard
New Samsung Browser (Full screen by default, new tab interface and more)
New Reading Mode (Optimises display for reading, used by only a few specific applications)
New Camera firmware
Minor UI tweaks (Contacts app, Flashlight Widget, dialog boxes etc)
Other Samsung Galaxy devices are expected to get the Android 4.3 update, a number of our readers have been asking when the update will be available for the Samsung Galaxy S3, it looks like this may land some time in November, although this has not been confirmed by Samsung.
Source GSM Arena