There is another Android 4.1 Jelly Bean update for international Samsung Galaxy S3 leaked to the web today but it most probably the last leaked JB update before the official OTA. We make this conclusion as SamMobile stated that this latest JB update for Samsung Galaxy S3 is more stable as compared to the previous leaked version. It seem like Samsung will be releasing the official Jelly Bean OTA very soon. We presume the release date fall within this week. It have been a week from the “rumored” release date of Jelly Bean update.
You can try to flash this ROM if you really cannot wait for official release. Full tutorial of flashing custom rom can easily found in XDA forums.