these are just balance issues that were addressed.
Scorestreaks: Death Machine: 3 hit kill range increased. Dragonfire: health increased, gun spread reduced. AGR: ground speed increased, reduced machine gun close range damage. Warthog: reduced missile delay. Lodestar: reduced missile speed and AOE radius. Swarm: drone re-spawn delay increased.
Perks: Hard Wired: Players with hard wired are now completely unaffected by EMP grenades.
Equipment: Trophy System: increased range.
SMGs: All + Silencers: reduced range.
Assault Rifles: All: reduced idle sway. M27: reduced amount of bullets to headshot kill at all ranges, increased 4-hit kill range. Type25: reduced amount of bullets to headshot kill at all ranges, slightly reduced maximum hip fire spread. SCAR: reduced amount of bullets to headshot kill at all ranges, slightly reduced maximum hip fire spread. SIG556: penetration increased from medium to large, increased maximum number of bullets to kill at long distance and reduced burst delay. TAR21: increased 3-hit kill range. SMR: slight increase to damage so that 2 hit kills can still happen with minor penetration, headshot multiplier increased at long distance. FAL OSW + Select Fire: increased recoil. FAL OSW: increased hip spread.
LMGs: All: ADS in and out time reduced.
Shotguns: SRM1216: slightly increased short range damage.
Pistols: Executioner: increased medium range damage.