I just checked the LG Open Source Code Distribution site and I see that there is now source code for Gingerbread (LS670(Thunder) Android Gingerbread LS670ZVH). If it's on that site then it should be available through the LG updater. Of course anyone who does this is risking losing root, most likely anyway. I'm going to go ahead and update and try the current root methods to see if they work.