Hands on with Android 4.3 on Samsung Galaxy S4,
Watch it here: Hands on with Android 4.3 on Galaxy S4 - YouTube
You can also get this too if you have a Custom recover and are rooted!
Flashed Stock Google Edition Rom first, Then Flashed the Leaked Android 4.3 Rom over it.
Leaked Rom comes from Sam Mobile : Install Android 4.3 on your Galaxy S4 (GT-I9505), ported from Google Play Edition (GT-I9505G) | SamMobile