Includes the ability to watch Prime instant videos. I finally get to use this part of my Prime membership for once. Still pretty weak but I found a few documentaries that I won't have to get mailed from Netflix.
http://www.ign.com/articles/2012/05/29/amazon-instant-video-now-on-xbox-live (http://www.ign.com/articles/2012/05/29/amazon-instant-video-now-on-xbox-live)
Now available on the 360. cl::p