So tonight I was finishing up the raid with a few buddies of mine again and I got off and went to go look through my arms and armament (AaA) book to see if there's something I missed within it (I figured out the code without using wiki or anything) and surely enough I do not believe I did. As soon as I was tucking away the AaA in the leather case it came in with the map I started looking it over because naturally I rushed to open it without paying attention to the cover or anything. That's beside the point, there is a shield on the front of the leather book with 4 symbols, they include (in order) Warlock, Hunter, Titan, and a bunch of crossed lines. Could this mean that there was a fourth class in the making, or is there another class to come? It wouldn't make sense for another class to appear though, Destiny has a consistency with the number three (three classes, races, factions, the symbol, soon to be subclass) so this could scratch out that the fourth class was in the making. Perhaps they will bring one with such a symbol to the game? Does anyone else have any theories on this?