Page SamMobile said that they had to get some shots on the Android version 4.3 running Galaxy S4 chips Snadragon 600 (GT-I9505). The origin of this ROM is from the Google Edition by Galaxy S4 in the "About phone" that shows the machine code is GT-I9505G. This shows that Google and Samsung have started testing Android 4.3 for their machine. Compared with Android 4.2, Android 4.3 has changed a bit camera interface, customize the hour circle is replaced by a semicircle, in addition to the machine running a bit smoother. There are also some rumors that Google is testing Android 4.3 on Nexus 4 and it is expected the new OS version will be launched in September or October this year.
If you have your hands on the Google Edition S4 or S4 for the U.S. carriers use Snapdragon chip, now you can download the ROM here JWR66N. ROM installed flash via recovery by time up as the other ROM.
Source: SamMobile