From the campaign:
The MBA Castle Kick Starter will run in October of 2014. Delivery is tentatively planned for May 2015. Products: MBA will introduce several new items to make our castle system the most complete, modular and versatile system available on the market. Products will include a new Keep, Great Hall, Drawbridge, Barbican, Castle Dungeon, Tavern Cellar, new Town Building, and many other exciting new products. Additionally, there will be great stretch goal freebies, and a specially sculpted line of castle wenches to add to your collection.