Samsung Galaxy S4 Owners Can Get an Early Look at Android 4.3
The Android 4.3 firmware is available over at SamMobile, a site that's been known to serve up early (and functioning) looks at upcoming Samsung updates.
"Android 4.3 port from the Google Play Edition Galaxy S4 is fully functional on the standard Snapdragon-powered Galaxy S4 (GT-I9505), there is not even a single thing which isn’t working," SamMobile states in sporadic bold. "We haven’t made any changes to the port, so it’s 100 percent original with zero changes."
Image Source: SamMobile
The site says this isn't flashable through Odin, though it's easy enough to install if you're at all familiar with flashing ROMs. Just copy the ROM to your internal SD card, enter Recovery (Power + Volume up + Home), Wipe/Factor Reset your Galaxy S4, flash, and reboot.
Bear in mind that this is an early version of Android 4.3, so it's likely missing some features and enhancements that will be found in the final build.