Game description from the publisher:
In Carcassonne: The Castle - Falcon, an expansion for the two-player game Carcassonne: The Castle, the Prince is growing and has taken up falconry, resulting in a large number of falcon nests in the castle. Also, religion has come to the castle, and there is now the possibility of building chapels in the castle.
All of this means more opportunities and challenges for the players to enjoy this great Carcassonne game.
According to Reiner Knizia, Rio Grande originally planned to release the game in 2009.