Treyarch have released the new update for Call of Duty: Black Ops 2. Currently, it's only live for Xbox 360 players, and the update takes up 32MB.

New Features & New Feature Improvements:
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Added support for Live Streaming in all Public Match playlists.
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Added League Best from Season 1 to Player Card.
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If you played in multiple series and/or multiple teams then your highest division and rank will be displayed. The League Best will span all seasons. If you finish with a higher division rank in Season 2 then your new League Best will be displayed after Season 2.
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Added a Cumulative Daily Pool instead of a Weekly Pool in League Play. 200 Rank Points are added to a player’s pool every day. Points that are not used are rolled into the next day.
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Added 2 new pages to the Combat Record (the Combat Summary and Medals.)
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Implemented sorting of Medals in the After Action Report.
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Lowered HUD threshold for the “low health” overlay to increase player’s awareness of low health.
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Added a “Go to Top” button for the League Leaderboard.
Issues Addressed:
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Matchmaking modified to never return games outside of player’s own continent, unless the Connection Type in Search Preferences is set to “Any”.
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Addressed an issue where the UAV would not trigger if called in while aiming down sight.
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Addressed an issue where the Master Demolition challenge did not unlock when the requirements were complete.
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Addressed issue with the headshot sound not playing in final Killcams and Theater Demos.
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Fixed an issue in League Play where “Career Wins” for a Series were not displayed during placement in the Lobby Career Overview.
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Updated the After Action Report in League Play so that bonus points are not summed with the ladder points in points earned for the match.
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Removed the ability to make dual wield attachment combos in Elite Create a Class and addressed an issue where these classes were appearing as missing in game.
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Corrected mode description message displayed on YouTube when Live Streaming Public Match Core game modes.
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Stocks on SMGs no longer allow a player to move faster while ADS than when moving normally.
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Shotgun crosshairs will no longer turn red if an enemy is out of the shotgun’s maximum damage range.
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Fixed an issue where bullets would not fire straight immediately after aiming down the sight while moving at the same time.
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Improved turret tracking to eliminate false positives when checking line of sight.
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Turrets now have smoother tracking when targeting players.
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Improved bot pathing on multiple maps.
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Current League Info is now getting updated properly in the Player Identity.
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Manual sorting on League Teams removed as the results are now returned correctly.
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Improved the Scoreboard to make friend Playercard information more accessible.
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Addressed multiple UI issues.
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Players can no longer earn credit towards a Prestige Equipment challenge through “friendly” flashbangs, concussions, and shock charges.
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Fixed Select Fire weapons reverting back to their default fire method when using certain Scorestreaks and not calling them in.
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Addressed an exploit where the game allowed access to the Custom Games Settings while believing the game was Public Matchmaking, allowing XP.
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Fixed UI errors when linking Live Stream.
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Score and points are no longer awarded if a player destroys their own turret in Hardcore FFA.
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Improved image alignment when Stereoscopic 3D is enabled.
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Addressed an issue where players were able to plant numerous Assault Shields.
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Addressed an issue where the Stealth Helicopter was able to drop below the map in Drone.
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Players are no longer able to get infinite Black Hats by immediately using another Black Hat.
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Addressed an issue where it was possible for a player to equip two Assault Shields at the same time.
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Players Spectating a One in the Chamber game no longer earn Survivor Bonus Points.
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A player can no longer earn Medals for multi-kills if they continue to kill quickly after dying and re-spawning.
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Various minor map fixes were made across multiple maps.
Scorestreaks:
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Death Machine: 3 hit kill range increased.
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Dragonfire: health increased, gun spread reduced.
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AGR: ground speed increased, reduced machine gun close range damage.
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Warthog: reduced missile delay.
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Lodestar: reduced missile speed and AOE radius.
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Swarm: drone re-spawn delay increased.
Perks:
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Hard Wired: Players with hard wired are now completely unaffected by EMP grenades.
Equipment:
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Trophy System: increased range.
SMGs:
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All + Silencers: reduced range.
Assualt Rifles:
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All: reduced idle sway.
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M27: reduced amount of bullets to headshot kill at all ranges, increased 4-hit kill range.
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Type25: reduced amount of bullets to headshot kill at all ranges, slightly reduced maximum hip fire spread.
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SCAR: reduced amount of bullets to headshot kill at all ranges, slightly reduced maximum hip fire spread.
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SIG556: penetration increased from medium to large, increased maximum number of bullets to kill at long distance and reduced burst delay.
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TAR21: increased 3-hit kill range.
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SMR: slight increase to damage so that 2 hit kills can still happen with minor penetration, headshot multiplier increased at long distance.
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FAL OSW + Select Fire: increased recoil.
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FAL OSW: increased hip spread.
LMGs:
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All: ADS in and out time reduced.
Shotguns:
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SRM1216: slightly increased short range damage.
Pistols:
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Executioner: increased medium range damage.