A First Step In A New Direction —
343 Industries aims to differentiate itself from Bungie by making "Halo 4" the first part of a three-game arc. By now, you've already seen the Machinima web-series "Forward Unto Dawn," and 343 Industries is offering gamers "a more complete connectivity" between the video games and the novel. Little information has been released regarding the trilogy storyline, but developers have claimed that "Halo 5" will be a much darker title before the conflict is resolved in "Halo 6".
In the meantime, you should get acquainted with "Halo 4" by hitting up your local GameStop!