Limited selection like Prime Instant Video, but at least it's available on Android (although the app doesn't seem to support the new service yet and is butt-ugly). On a side note, I don't really get why Amazon is twisting our arms and doesn't offer Instant Video on Android outside of Google TV and Kindle Fire. I care less about their free videos, but I've purchased digital content and I'm not able to watch it on my Android tablet. Do they really think they can make me buy Kindle Fire just for that?
This is most interesting for me. They are deliberately withholding an android app for streaming video, but they are dipping their toes in with streaming music.