A software update for the Samsung Galaxy S III has been leaked that brings a range of Samsung Galaxy S4 features to the 2012 handset.

As revealed by Sammobile, along with an accompanying video that gets a little more interesting once they've finished flicking Google's beans around, the new software brings a range of refinements to the Samsung handset.

It is detailed as being test firmware, but the list of upgrades looks pretty comprehensive so far, including more lockscreen options and refinements, screen modes, enhanced voice commands and the new S Voice, and new look to the settings interface, reflecting that of the SGS4.

There's a heap of Android 4.2.2 option in there too, including the rather pointless (in our opinion) Daydream function and enhancements to notifications.

To top the whole thing off, Sammobile has the leaked firmware available for you if you'd like to crowbar it into your own device, accepting that this is pre-release software and that you do so at your own risk.