It would be insane for Bungie Studios to categorically rule out working on another Halo game after Halo: Reach is released later this year on Xbox 360. Even though internal Microsoft developer 343 Industries is not-so-secretly working on whatever's coming after Halo: Reach, it's always possible Bungie could come back to Halo. The studio is admitting that's possible, too.
"You know, it might be premature to say we'll never ever, ever make a Halo game again," said Bungie community and franchise director Brian Jarrard to CVG. "We sort of have a little special place for Halo in our hearts. But for the foreseeable future, this [Halo: Reach] is it."
Jarrad later said the team is working extremely hard on Halo: Reach just in case it ends up being the last Halo product that Bungie ever works on. The future of Bungie post-Halo: Reach remains a big mystery, but if moving past Halo doesn't work out for them, leaving the door open to Master Chief and the Covenant seems like a smart move. Why close that door?