In Ghosts of Onyx Halsey and the Spartans destroyed the Shield World, they're all dead.
I'd like to see the last reamnents of the Forerunner.
I think the Flood are still around (I know they are)
Just wait for Halo Fest at PAX, I know I'll be going, cant wait to see MP and Campaign trailers/gameplay. They damn well better have GAMEPLAY for Halo 4, or atleast do a HUGE discussion on the story, I dont care if we get to play anything, just want to see more. ya dig?