Some leaks claim it is:

http://gizmodo.com/report-amazon-is-gearing-up-to-add-a-streaming-music-s-1532828948

 

"Re/code reports the claims of industry sources who say Amazon is in talks to create a streaming music service that it would bundle with Prime subscriptions. The report makes a lot of sense, and if true, it would make Amazon Prime and even better deal than it already is. Think how amazing that would be!"