The director said the trailers have nothing to do with the season... But all the trailers are somewhat similar which makes me believe that the the trailers do infact reveal clues to the theme... All the clues remind me of.. "children of the corn" , "jeepers creepers" , pretty much anything with harvests, farms, pilgrims, settlers, Stuff like that. So it could definitely be the lost colony. I guess we will have to wait and find out.