Casting breakdowns are what casting directors use to advertise what roles are available for auditions. Generally these are given to talent agents who then set up auditions for any of their clients that fit the criteria laid out. They contain not only descriptions of the roles available, but also what sort of time commitment is required for the character. While searching the web for a full Game of Thrones breakdown turned up nothing, I did find a couple of tidbits of info from folks who claim to have seen the breakdowns.
First, an actress named Michele Boyd twittered about seeing a Thrones breakdown. Here is what she said in response to someone who asked if she was going to be auditioning for a role.
would kill for the chance, but they were only looking for Cersei, Jamie and Khal Drogo…I am none of those :(
Also I found the following info thanks to this thread discussing possible casting directors over at the Westeros forums. A poster in that thread links to a thread on the Naruto forums (of all places) where someone claims to be auditioning for Robb, Jon and Theon. Here is what he has to say about the breakdown for those roles.
According to the character breakdown, the first season looks to be 10 episodes long, because it says that Jon Snow will be needed for 10 episodes. And then for all series. Whereas Robb’s only needed for 8 episodes of series one, and then stays until season 3. Whilst Theon is needed for 7 episodes for season 1,, and will return in seasons 2 and 4.
Winter Is Coming: Couple of interesting things can be gleaned from this info. First, Michele Boyd is based out of LA so I have to assume she saw an LA casting breakdown. Does that mean they are looking in LA specifically for Cersei, Jaime and Khal Drogo? Many people have stated that they always imagined the Lannisters as sort of American. With Dinklage already in as Tyrion, maybe they want Americans for the other two Lannister siblings?
Secondly, the episode counts, 10 episodes is a bit less than what most people were expecting. Obviously this number could change, but I hope they are giving themselves enough time to tell the whole story. Also, Theon being needed for seasons 1 and 2 are obvious, but they say he will return in season 4. Confirmation that A Feast for Crows and A Dance with Dragons will be combined into one season?