Deep Silver announced a special Goliath Edition for Homefront: The Revolution today. This includes a boxed copy of the game, a radio-controlled replica of the Goliath drone vehicle, an art book, and more.

If you don't want the Goliath Edition in particular, there are other pre-order bonuses to consider.
Pre-Order Homefront: The Revolution from any retailer to secure the Revolutionary Spirit pack, which includes:

All Digital pre-orders come with the Liberty Pack, featuring two pieces of rare combat gear unlocked and ready to personalize your Co-Op character with the Liberty Body Armour and KPA Shock Trooper Helmet.

Further pre-order bonuses are available with these North American selected retailers: