Google recently started rolling out an Android 4.1.2 software update for the Google Nexus 7 tablet and some other devices including the Galaxy Nexus smartphone. The update lets you view the home screen in landscape orientation on 7 inch tablets, and includes performance and stability improvements.
But there's one thing you might want to know before installing the update — you'll lose root access or any custom recovery you may have installed when you upgrade from Android 4.1.1 to Android 4.1.2 using the over-the-air update.
If you want to keep root access though, there's an app for that.