Nexus 4 owners who know a little about downloading builds may be in luck, a forum post on XDAdevelopers linked to Android 4.3 build, but it was only operable with the Nexus 4.
The Dropbox link has since stopped working, but has been mirrored by many developers and hackers keen to try out the newest instalment of Android 4.3. While this is not a major upgrade in any respects, Google has polished and redefined some areas.
It is still questionable if this is Android 4.3, but the amount of leaks and rumours lately make it seem more likely this is a leaked version of the software, although it may be from a few months ago.
Google will launch Android 4.3 at the July 24 unveiling, with Sundar Pichai kicking off the Android event. We expect to see the redesigned Nexus 7 coming to the event as well and we may see the Moto X or the Nexus 5.