They added a lot of customization to the game, such as multiple new weapon camos, two different knives to choose from (regular and improvised shank), Pistol customization, plus camos for them, different med packs and ammo packs, new grenade launchers (I saw an XM25) Variations on current attachments, and player customization might be improved. This is all pre-alpha stuff so we should see more than 2 knives and more camos.