Clash of Clans accidentally leaked details about Town Hall 17 in a marketing email promoting the Hammer Jam event, which offers a 50% discount on upgrade costs and times. The email highlights free Builder portions available through the Supercell store, where players can also earn monthly rewards by completing challenges without making purchases. Additionally, purchasing items from the store allows players to accumulate bonus points for further rewards. Notably, an image comparing Town Hall 6 to Town Hall 17 hints at design elements like color schemes and features such as eagle artillery integration into the new town hall.