Update 22/10, 8:00:
Samsung has confirmed the Jelly Bean update is now available.
Good news! The wait time is almost over for Samsung Galaxy SIII users. From tomorrow, 19th October '12, you'll be be able to upgrade to the much awaited 4.1 Jelly Bean update over Wi-Fi or via Kies.
If you have activated the 'auto-update' feature from out of box, you will be prompted to download the 4.1 Jelly Bean update.
Track usage, upgrade and get support with the My O2 appDownload My O2