The theme this year should be simple "the woods". The street experience would be full of shrubs, trees, ect. that actors hide in but also with the scare zones and haunted houses scattered around the park.
We already know about 2 (maybe 3) houses which are located in the woods: Cabin in the Woods, Dead evil, and the sprung tent where I spotted a huge pile of trees (pictures in the construction thread). All of these houses, if true, would make a great event and make me a happy camper! (Pun intended)