So I can confirm that you obviously lose root after the new update. But not only that, the new VRUAME7 build flashes a new bootloader that prevents you from flashing the prerelease kernel effectively preventing you from rerooting after as well. I have a few ideas I'm going to try to get this working but it may require a few extra steps. Watch here for updates and DO NOT update to the new build yet if you want to keep root: