There shall be 2 new voice over packs, which once set will announce different things in your game. For example, on Domination instead of hearing the generic "We've lost B" etc. we shall instead be able to hear Snoop Dogg or Drill Instructor (R. Lee Ermey).
Below are the two videos of them talking about their packs.
There shall be 6 new personalisation packs released, each includes a weapon camo, reticle, patch and background