We’ve already seen a Jelly Bean leak for the international Galaxy S III, so it’s only fitting that builds start to leak for the U.S. variants. The first lucky recipient is the T-Mobile model. The update appears to be bug free, but given that it has yet to be announced by Samsung, a few hiccups are possible.
Here are some instructions to help you install:
If you install the leak, let us know how it goes in the comments!