The Facebook rewards will be given through a startup message along with the new lands launching. There are no plans at this time to reduce the cost of Hoarfrost. Thanks! 2k really snuck up on me. The Beacon Tower is a Spy Defense Tower That's correct, only Level 1 will be available at this time.
You should make the spy glasses a regular inventory item and let us use it when ever we want to Like the building token ^_^