For the rest of the users out there, like the ones that like to have root access, you are screwed. As with most updates from many companies, once updated it will unroot your device. In the past that was no biggie since you’d just rerun SuperOneClick and be back to your favorite abilities again. This time though, it looks like that Amazon has ‘fix’ the root method loop-hole and it is not root-able anymore. Not like that has stopped the developing community before. All this means is that Amazon has made a little more work for the devs. It most likely won’t be too long before root is re-established. We still feel like you should know though.
The only way to keep from getting the update is to not connect to Wi-Fi, ever again. At least until the root method is fixed. Other wise you may want to read up on how to get your awesome Kindle Fire loaded up with CyanogenMOD. Other wise the update is a sure-fire install and their isn’t anything you can do about it.