The Verizon model of the Galaxy SIII (S3) received its Jelly Bean update fashionably late back in December, and now an Android 4.1.2 update has leaked out as well. A poster at XDA Forums, who has had previous versions of the Galaxy S3 software posted, has just added this latest version to the list. The build -- version VRBMA2 -- is based on Android 4.1.2 and has a build date of January 19th. Initial reports are that this update doesn't include the "Premium Suite" apps, at least at this time, so we'll have to keep an eye out for future builds.
The file is available to download and flash at the source link below, but we have to put a word of caution on flashing pre-release versions of firmware. If you know the risks and want to go ahead with it, be sure to chime in in the forums and let other users know how it goes.
More: Verizon Galaxy S3 Forums