This is one of those cases where you wonder why they can't just release the final build already. Apparently another leaked version of Android 4.1.2 for the Verizon version of the SGS3 just hit the interwebs today. Supposedly, this new version isn't not even close to an official build and is missing a number of features, like the Premium Suite functions. Still, we know you guys like to tinker, so we would be remiss if we didn't mention it. You can find out more about it and grab the download at the XDA source link below.
Source: XDA