The latest patch notes can always be found at
http://www.worldofwarcraft.com/info/underdev/implemented/ --The Black Temple
Originally founded as a Draenei temple, this plot has been conquered and despoiled many times throughout the history of Outland, removing any spiritual grace it may have once held. The Black Temple has been the stage of the Orc Horde's blood curse, a fortress for the then-mortal Ner'zhul, and a prime staging ground for the Burning Legion's campaign of destruction.. Most recently, it has been claimed as home by Illidan, where he and his minions make their bid for power over the remnants of the shattered planet. Now, it is up to you to face the malefic forces of Illidan and his minions in hopes of freeing Outland from chaos and tyranny.
--Battleground Matching System
A player matching system has been put into effect to encourage a more competitive player vs. player environment. The system will work by assigning a “gear rating” to every player for each honorable kill earned, based on the value of the player’s equipped items at the time. These ratings are averaged over many battles, and will be used by the system to match up players of similar strength in cross-realm battlegrounds.
--General
Equivalent percentages are now displayed for combat ratings on item tooltips.
Holiday quests and other seasonal quests done during past events that previously could not be repeated can now be completed.
Weapons with uncontrollable procs (e.g. stun) will no longer trigger diminishing returns in PvP.
Repeatable quests no longer award experience to players at max level (70).
Talent bonuses are now reflected in the character tab.
Confused guards in Silvermoon City, Exodar, and other places no longer give directions to locations in Stormwind City.
System performance when enabling the full screen glow effect improved.
Players using dual video card setups will now have their graphic options optimized by default.
Guards now give directions to more locations than before (e.g. reagent vendors, faction leaders, nearest repair NPCs etc.)
Booty Bay is now flagged as outdoors.
Fixed display issues with female Blood Elf models.
The male gnome /cheer animation now plays properly.
Blood Elf and Draenei player characters are now properly flagged in many quests.
--PvP
Entering an arena will now grant the “Gladiator’s Resolve” buff that increases health by 20%.
The amount of resilience rating needed to get the same benefit has been decreased.
Fixed an issue with Halaa guards evading and preventing players from taking over the city.
Fixed an issue that caused players to resurrect with less than full health and mana in battlegrounds while wearing items that grant random item attributes.
--Pets
Warlock and Hunter pets will now respawn when its owner dismounts from a flying mount.
Damage from combat pets will now count towards items and abilities that proc off killing blows.
--Druids
An Epic Flight Form quest has been added to the game. The Artisan riding skill is a prerequisite to beginning the quest.
Additional stacks of “Lifebloom” now benefit from bonus healing.
“Nature’s Reach” now also reduces threat caused by Balance spells by 5/10%.
The bleed effect of “Lacerate” now increases in potency with greater attack power.
The “Bear Form” armor bonus has been increased to 200% from 180%.
“Frenzied Regeneration” now converts 20 points of rage into 10% of total health per second for 5 sec.
“Tiger’s Fury” has been changed to increase your damage by 15% for 6 seconds.
“Faerie Fire” is now castable in Cat, Bear, and Dire Bear Forms and has no mana cost and a six second cooldown.
“Barkskin” now also reduces threat generated by spells for the duration.
“Remove Curse”, “Cure Poison”, and “Abolish Poison” can now be cast in “Tree of Life” form.
“Tree of Life” form now grants a 200% armor bonus.
The “Faerie Fire (Feral)” talent has been removed and replaced in position by Improved Faerie Fire.
“Improved Faerie Fire” has been reduced to 1 rank, for a 3% bonus.
New Talent (Balance): “Improved Moonkin Aura” - Tier 7 talent; Your Moonkin Aura also causes affected targets to have a 100% chance to regain 15/30% of the mana cost of any spell when they get a critical hit. The regeneration effect cannot occur more than once every 12 sec. Requires 1 point in Moonkin Form.
“Gift of the Wild (Rank 3)” now has a range consistent with other ranks of the spell.
--Hunters
“Monster Slaying” and “Humanoid Slaying” have been removed and replaced by the “Master Tracker” talent, which increases damage and critical strike damage caused against a tracked target by 1/2/3%.
“Lightning Reflexes” has been increased to a 5/10/15/20/25% bonus.
“Deflection” has been reduced to 2 ranks for a 2/5% bonus.
“Improved Feign Death” has been changed to give “Feign Death” a 50/100% to remove all harmful effects.
“Master Tactician” has been changed to give your critical hits with ranged attacks a 100% chance to increase your critical strike chance against the target by 2% for 8 sec. The effect stacks up to 5 times.
“Clever Traps” now also increases the damage of “Snake Trap” by 15/30% against flying targets.
“Kill Command” no longer triggers the global cooldown.
“Feign Death” now properly de-aggros player pets.
“Readiness” now properly finishes the cooldown on “Misdirection”.
--Mages
Fixed several issues with the “Water Elemental”.
The “Arcane Blast” debuff should now be applied when “Arcane Blast” is cast instantly with the “Netherwind Regalia” 8 piece set bonus.
--Paladins
“Libram of Eternal Rest” no longer prevents “Judgment of the Crusader” from refreshing.
“Illumination” now returns the correct amount of mana when using ranks
--Priests
“Shadow Reach” now reduces threat caused by Shadow spells by 5/10% in addition to increasing the range of your Shadow spells.
“Healing Focus” now affects “Binding Heal”.
“Prayer of Fortitude (Rank 3)” now has a range consistent with other ranks of the spell.
“Surge of Light” no longer consumes the full mana cost of “Smite”.
The “Weakened Soul” debuff no longer re-applies if the priest zones immediately after it ends.
--Rogues
“Improved Sap” no longer initiates the “Master of Subtlety” timer.
“Surprise Attacks” now prevents “Envenom” from being dodged.
--Shaman
“Rockbiter (Rank 3)” should now affect all maces.
--Warlocks
“Succubus” can now seduce many humanoids that were previously immune to charm effects.
“Curse of Doom” now properly consumes “Amplify Curse”.
--Items
The relative value of sockets when assigning stats to items has been standardized on high end items to match lower end items. As a direct result of this change, many higher quality items have had their stats improved.
Fixed an issue where identical bonuses from separate items were not stacking properly.
Hit rating granted from items is now reflected in the ranged character tab.
Fixed an issue where lockpicked boxes sent in the mail would become locked again.
The 2 piece set bonus from the “Netherweave Tunic” set now properly stacks with the 6 piece set bonus from “Field Marshal’s Regalia”.
The 3 piece set bonus from the “Defiler's Purpose” set now applies properly.
The 3 piece set bonus from the “Felstalker Armor” set now applies properly.
Fixed a bug where unequipping pieces from “Moonglade Raiment” while in feral form would cause the Druid to lose buffs.
“Eye of the Beast” now properly stacks with the “Imbued Netherweave” set.
The 5-piece “Felheart Raiment” set bonus will now always grant the Demonic Ally buff.
“Totem of Pulsing Earth” should now be better than “Totem of Lightning”.
“Admantile Weight Stones” can now be applied to fist weapons.
“Whitemend Hood” will now display properly on male Blood Elf characters.
“Thatia’s Self-Correcting Gauntlets” are now bind-on-pickup.
“Fetish of the Fallen” no longer requires a killing blow to proc.
“Mark of Defiance” will now proc off healing spells.
Nature protection potions will no longer proc spiritual attunement.
“Boots of the Infernal Coven” can now be disenchanted.
The bind-on-equip version of “Clefthoof Hide Leggings” has had its name changed to “Clefthoof Hide Kilt”.
“Marsh Lichen” is now considered a fungus.
The “Learn Two Parachute” trinket should now properly prevent players from taking falling damage.
“Quixotic Quotient” now has More charges.
“Twin-Bladed Ripper” now has a sell price.
Equipping and un-equipping “Wrynn Dynasty Greaves” will no longer cause the player’s defense rating to fluctuate.
The “Hand of Edward the Odd” proc will now properly make the next spell cast instantly.
“Enigmatic Skyfire Diamond” now properly grants the crit bonus.
“Oracle Belt of Timeless Mystery” no longer has an on use effect.
Fixed an issue where the “Tidefury Helm” graphic would display incorrectly on Troll female characters.
Fixed a typo in the name of “Druidic Helmet of Second Sight”.
Fixed a typo in the recipe description of “Earth Shatter”.
“Gyromast’s Key” will now be removed from your inventory after the quest “Gyromasts Revenge” has been completed.
“Strikers Pauldron” will now render correctly under different lighting conditions.
Fixed a display issue with “Lunar Crescent Axe” on female Night Elf characters.
Fixed the proc rate of “Masquerade Gown”.
“Hammer of Destiny” will now properly proc.
Players will be relieved to learn that many helm graphics no longer remove hair.
Sickle of Unyielding Strength will now display correctly on characters.
Fixed a typo in the flavor text of “Fenclaw Hide”.
The tooltip of “Burrowers Shell” now indicates that it absorbs physical damage.
“Mok'Nathal Hero's Pantaloons” now has a sell price.