Heads up if you bought a mp3 album and got the 20GB cloud storage free for a year deal. Amazon has now change it to Unlimited space!
Now all previous purchase music from Amazon you upload manually will not count toward storage.
I'm not sure how long unlimited is to last the email didn't say but I checked my cloud storage and all my amazon music I uploaded myself now shows under Purchased music and has a line drawn through the size amount.
I also noticed some new folders like documents, pictures and video!