Whilst playing tranzit I have noticed these catalogues in the bus station where you find the stand for the turbine. Each one are named Air travel, Let's sail, Birdier weekly and cross word. Like the posters in kino I think they would resemble as clues to upcoming zombie maps. If this is so I think cross word would resemble Die Rise as it is like a maze and they would relate in some way.
When DLC#2 comes out we could see a pattern if these may relate as treyarch must have put these in for a reason.
What do you think? Could this be true? Could this help us figure out any future DLC?