A Game of Thrones: A Clash of Kings Expansion

Publisher´s description:

Fantasy Flight is ready to deliver "A Clash of Kings", the first expansion to "A Game of Thrones: The Board Game"!

This new expansion and will include rules and components for the following:

 The new House Martell (for playing the game with 6 players; includes new cards, tokens, and a large gameboard overlay. 
 An alternative higher-powered set of House Cards for all six Houses. 
 Rules and components for managing the ports of Westeros, 
 New wooden tokens for the powerful but vulnerable Siege Engines.
 Wooden Fortification tokens. 
 Special order tokens for every house.

"A Clash of Kings" will require the main "A Game of Thrones Board Game" to play.