Dota 2 spectator client released on Steam

Valve announced today that they have released a brand new spectating client for their upcoming MOBA title, Dota 2 which is currently in beta. The spectating client will allow viewers to tune in to matches and view them from the perspective of players, or from the perspective of a cameraman directing the action with commentators piped in. It all seems very similar to StarCraft 2's replay system, with