There is no word for the Snapdragon version update but it should be arriving in the next few days.
Coming to the update, it brings minor user-interface tweaks like white status bar icons, camera icon on lock-screen and album art on lock-screen as well as better keyboard layout. In addition the KitKat specific goodies – cloud-print support, immersive mode, new emojis support, ability to choose between messaging app and Hangouts for SMS/ MMS and more.
The update is available both over-the-air (OTA) and via Kies application. Your phone will notify you once the update is available or you can check it manually in Kies or by going to Settings > More > About Device > Software update > Update on your Galaxy S4.
Update details:
- PDA: I9500XXUFNB3
- CSC: I9500SERFNB3
- MODEM: I9500XXUFNA6
