First of all, I do not take credit for this. All credit goes to IGN.
I will keep this post updated for anything new and be sure to check out the website for the videos.
http://uk.ign.com/wikis/halo-4
What's the plot of Halo 4?
Where does Halo 4 take place?
When does Halo 4 take place?
What is 'The Reclaimer Trilogy'?
Who is developing Halo 4?
What characters are returning in Halo 4?
Un-confirmed Characters
What will Halo 4's multiplayer be like?
What is Spartan Ops?
What Weapons and Vehicles are Returning in Halo 4?