Samsung released the first software update for the Galaxy S4 (GT-I9500) last month that brought stability improvements. Now a new update (I9500DDUBMEA)is rolling out for the Galaxy S4 users in India. This update brings new features such as option to move apps to the SD card, Semi-transparent status bar, new Smart Pause toggle in the notification, New camera firmware and lots more. The update rolled out for the Snapdragon version of the Galaxy S4 (GT-I9505) in Germany last week.
This update also brings New Camera firmware, Smart Pause Toggle in the quick settings, New Icons in Settings, Secure boot status (About Phone), Increase legibility (Display) (New feature) and more. It also brings lot of stability improvements.
The update is about 343MB and is available Over-the-Air (OTA) in India. You can try updating the phone using Kies software if it fails to update OTA.