Well, I can see that Motorola is been updating the droid razor to 4.1.2, are you still running stock ROM or are you rooted user? I guess if you are running the stock ROM then you'll be getting the 4.1.2 update over the air, and still if you haven't received try waiting for a while and I am sure you will be getting ... !!
Welcome to Android Central! You have a Droid Razr XT912? That should have been updated to 4.1.2 long ago, if it's unrooted. Are you on Verizon? What happens when you go to Settings>About Phone>System Updates, and tap the Check for Updates button?