Samsung has already started on the Jelly Bean upgrade path for the Galaxy S III, but that hasn't meant much so far unless you live in Samsung's homeland. The update's global relevance is expanding in grand fashion now that the company has confirmed the software is rolling out to Galaxy S III units across the UK. Variants on the smartphone for British carriers should get their taste of Android 4.1 over the course of a multi-week update process that brings everyone to the new version. Different carrier testing methods prevent Samsung from being any more specific; it's reasonable to say, though, that most owners living in Old Blighty should be running Jelly Bean before the holiday season kicks into overdrive.
Samsung Galaxy S III
Google Android 6.0