Well, for those of you with the new Kindle Fires, people at XDA have a working boot of 4.2 that should be available in the next few weeks once it's tweaked a little more. Was just chatting in the IRC channel just now. 8.9 will get it first, and then there's a build for the 7 HD that is being worked on aswell.
So nice surround sound AND stock Android. I'm jealous.