new update for all platforms released today
http://community.callofduty.com/message/413552518among my favorites:
Swarm: drone re-spawn delay increased.
AGR: ground speed increased, reduced machine gun close range damage.
Dragonfire: health increased, gun spread reduced.
Trophy System: increased range.
SMGs:
All + Silencers: reduced range.
SCAR: Increased 3-hit kill range. Maximum amount of bullets to kill is now 4.
LMGs:
All: ADS in and out time reduced.
Executioner: increased medium range damage.