The roll-out is currently available as an OTA update in certain parts of Asia with no word on when it will be coming to other parts of the world.
However, once these software versions start emerging, there's more than a decent chance that it will start running out to other international handsets too – we've had a word with Google and while it offered us no specific date, it did confirm the 'update is continuing to be rolled out'... so other markets shouldn't be too far behind.
Jelly Bean in the bag
But enough about the when – let's focus on the what and the woohoo of this little announcement. Firstly, Jelly Bean won't supercharge your Nexus S in the way Ice Cream Sandwich did, but will make things that little bit more intuitive.
For instance, you'll notice a notifications bar that can predict where you're going and alert you to traffic info on the way, and keep you up to date with your football scores (possibly when you're trying desperately to avoid them).
And you'll notice, thanks to the aptly-named Project Butter, a much smoother experience under the finger as Google has altered the UI code to offer a much better navigational system.
And the woohoo we referred to earlier was down to the fact the update seems to be happening so much sooner than before – ICS took months, whereas Jelly Bean's update cycle seems to be so much more efficient. Good times all round for Android fans.