I doubt it, I think the trilogy summed up what the creators set out to do. But they have left the Halo universe open to future games like Halo ODST and the upcoming Halo Reach.
While we may see them again, I think the main storyline featuring the Master Chief and Cortana is over.
Halo 4 has no release date, but Microsoft is “secretly” working on it. While Bungie no longer has their hand in creating it they are overseeing the project. I wouldn’t expect to see it any time soon after 2011 though. Keep an eye out for the upcoming E3 though, when the existence of Halo 4 (Or whatever it’s gonna be called.) will be exposed and confirmed.
@stratman37 ODST was way too easy, and much shorter than the other Halo games. I’m glad that I gave it a play, but it doesn’t compare to any of the main trilogy IMO.
And I kept running out of ammo for the new, cool guns! Damnit!
I DO love the setting where you can take out a grunt with a headshot and confetti flies out and kids cheer. I think it’s called Happy Birthday. I laugh my butt off everytime it happens!