I'm wondering what they're up to. I have a feeling it's going to be something along the lines of Flood/Forerunner enemies, since the Flood was never eliminated yet.
I actually didn't mind ODST, I just hated the fact that Firefight never had any real match making. I rented Reach for a week and never touched it again-It's the only Halo game I've honestly been disappointed with. Though to be honest, I haven't touched any Halo game in a very long time.
EDIT:And yes, I agree Edison. The new Assassin's Creed will probably be on my list of games. I still haven't even played any of them through, only watch my brother do so. They look really good, but the contextual button system grinds the crap out of my nerves.