Last night was a HUGE night for us here at TUSCC.
It's been a long time coming for the Jelly Bean update to hit our devices, and as the "caboose" carrier branded GS3, we felt a little left out...
Not anymore! Last night our very own Adam (Snodrog742) along with atronin uploaded the official release to the site, and it is now available to EACH AND EVERY ONE OF YOU!
(Are you going to update YOUR GS3 to JB before USC even announces it!?)
LK5 Jelly Bean - JELLYBEAN
Guide to install - WALKTHROUGH
Guide to ROOT new LK5 - (See post #10 in above link)
(will edit OP for easier find if need be)
Additionally, USC hasn't officially announced the date for this to go OTA - but rumor has it that it should be on the 21st.
Could the OTA be different that this build? We don't know, but a very large number of retail locations were given this same build to distribute, so it's very unlikely.