One of our sources specifically mentioned three music services as launch partners: Spotify, Rdio and MOG. It’s unclear whether Facebook has lined up other launch partners for its music platform or whether Facebook will open up its platform to other developers. One of our sources noted, however, that Facebook doesn’t like playing favorites, so our bet is that Facebook will open up its music platform to other third-party developers.
We’ve also heard whispers that Facebook intends for this platform to go beyond music — for example, it’s possible that Netflix could stream movies through Facebook. However, we don’t know if Facebook will go beyond the music platform announcement at f8.