More info

Covenant have been confirmed
Forge has been confirmed
that is all for now

Firefight returning?

http://www.youtube.com/watch?v=N74p-JxJZgg - 10:00 mentions "competitive or something else", when mentioning maps in Halo 4, I can suspect than either firefight or another game mode will be included considering Frank O'Conner says 'or something else we're talking about later' ...speculate away!

Halo 4 perks

http://www.eurogamer.net/articles/2012-03-05-halo-4-perks-system-introduced

This source says Halo 4 will have multiplayer perks... how will this work? will it work? I'd like to see what they do with it.

If theyre adding progression system then perks would be a good idea, but as far as ideas go - this doesn't necessarily make the idea good/balanced.

Also from the first look vidoc - i saw what looked like plasma grenades on the HUD and I didn't see any indication of sprint having an icon.
Perhaps sprint is the only armour ability? despite I thought I saw a jetpack on some spartan's back.

More news hopefully soon.