Bungie Hint At Halo 3 Expansion, Not New Game

[S.T.A.G.E.]

JaggedSac said:
Bungie has confirmed that they are indeed making 3 completely new games. 1 of which was leaked that it was Halo related(not Halo 4).

Yeah, they said they were inspired by the marines action in Halo Wars. They also have a story too.