The system dump is based on a test version version I9500XXUAMCH, and brings demonstration videos, the S Voice APK, as well as the wallpapers and ringtones.
System Dump Details:
Android Version: 4.2.2 – JDQ39
PDA: I9500XXUAMCH
Build Date: 23 March 2013
Changelist: 335382
While the system dump files wont be useful to users, you can enjoy the ringtones and the wallpapers until you get your hands officially on the device.
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The Samsung Galaxy S IV is expected to arrive by the end of April. It will feature a 5 inch Super AMOLED touch display with a 1080 by 1920 pixel resolution, up to 64GB of internal storage which can be expanded through microSD, a 13 megapixel camera capable of 1080p HD video capture, a secondary 2 megapixel camera for video calls, 4G LTE connectivity, NFC, and will be powered by a Samsung Exynos 5 Octa core processor with 2GB of RAM.
source – SamMobile