As has been mentioned a few times in this topic, spectator mode for arenas and battlegrounds would be cool and it is definitely something we would like to do. At this point however, we have no plans to implement such a feature :(

11/07/2012 12:14Posted by Marina

Just how long are they planning on waiting?

As Tom Chilton said in the video, "It's just a question of being able to get around to doing it, so someday...Hopefully"