Patch 1.12.0 (undocumented changes)

Battlegrounds

 * In order to whisper a player from another server in your battleground you must append "-Servername" to the end of their name. These whispers will not show up on your screen, but will show up on theirs.
 * Conjured items are the only type of items that can be traded to players from another server (anything else will give an error message).
 * When you join a battleground, you are automatically added to a raid group. You MAY NOT leave that group. To speak in this raid, use /bg instead of /ra.
 * Leadership of the battleground raid is granted to whomever has the highest PvP rank when the raid is formed (approximately 1 minute before the battleground starts).
 * You may be in a battleground group and a regular group at once, but the battleground group will be the one you see in the party frame as well as the raid tab.

World PvP

 * Silithus and Eastern Plaguelands both now have battlemaps like battlegrounds do.

Honor System

 * The curve has been adjusted to allow more people into the ranks.

Rogue

 * Expose Armor is now a non-ranked ability that reduces armor by percentage.


 * Assassination
 * Remorseless Attacks now has 2 ranks (was 5). Critical strike bonus is now 20/40% (was 8/16/24/32/40%).
 * Murder (rogue talent) redesigned. Now increases damage caused against Humanoid, Giant, Beast, and Dragonkin by 1/2%. A bug causes the amount to show as 2/4%.
 * Previous effect: Increases your chance to hit while using your Sap, Ambush, Garrote, or Cheap Shot abilities by 3/5%.
 * Relentless Strikes no longer requires 3 points in Ruthlessness. Ruthlessness still appears as a prerequisite, but this is just a visual error.
 * Improved Expose Armor now has 2 ranks (was 3). Now increases the armor reduced by your Expose Armor ability by an additional 25/50%.
 * Previous effect: Increases the armor reduced by your Expose Armor ability by 15/30/45%.
 * Vile Poisons now increases the damage dealt by your poisons by 4/8/12/16/20% (was 3/6/9/12/15%). Now also gives your poisons a 8/16/24/32/40% chance to resist dispel effects.
 * Improved Instant Poison removed; replaced by Improved Poisons.
 * Improved Deadly Poison removed.
 * Improved Kidney Shot redesigned. Now increases the damage a target receives from all sources by 3/6/9% while affected by Kidney Shot.
 * Previous effect: Reduces the cooldown of your Kidney Shot ability by 2/4/5 secs.


 * Combat
 * Improved Evasion removed; replaced by Endurance (rogue talent).
 * Improved Sprint redesigned. Now gives a 50/100% chance to remove all movement impairing effects when you activate your Sprint ability.
 * Previous effect: Reduces the cooldown of your Sprint ability by 30/60/90 sec.
 * Mace Specialization (rogue talent): Now also increases your skill with Maces by 1/2/3/4/5.
 * Throwing Weapon Specialization removed; replaced by Weapon Expertise.
 * Adrenaline Rush cooldown reduced to 5 minutes (was 6 minutes).


 * Subtlety
 * Rapid Concealment removed; merged into Camouflage (rogue talent).
 * Opportunity moved to tier 1 (was tier 2).
 * Camouflage (rogue talent) moved to tier 2 (was tier 1). Now also reduces the cooldown of your Stealth ability by 1/2/3/4/5 sec.
 * Sleight of Hand added.
 * Elusiveness (rogue talent) now has 2 ranks (was 5 ranks). Cooldown reduction is now 45 sec/1.5 min (was 15 sec/30 sec/45 sec/1 min/1.3 min). No longer affects Evasion.
 * Initiative now has 3 ranks (was 5 ranks). Chance to add a combo point is now 25/50/75% (was 15/30/45/60/75%).
 * Ghostly Strike energy cost reduced to 40 (was 50).
 * Improved Garrote removed.
 * Improved Ambush no longer requires 5 points in Opportunity.
 * Setup moved to tier 4 (was tier 6). No longer requires 1 point in Ghostly Strike. Now also has a chance to trigger after you fully resist one of your target's spells.
 * Improved Vanish removed.
 * Improved Rupture removed; replaced by Serrated Blades.
 * Heightened Senses (rogue talent) added.
 * Improved Cheap Shot removed; replaced by Dirty Deeds (rogue talent).
 * Improved Distract removed.
 * Hemorrhage moved to tier 5 (was tier 6).
 * Deadliness added.
 * Premeditation now requires 1 point in Preparation. Now has no cost (was 10 Energy), an instant cast (was 1 sec), and a 20 yd range (was 15 yd). Now requires stealth to use. Combo points will now be lost if they're not used or added to within 10 sec (previously they were lost if the target wasn't engaged in combat within 10 sec).


 * Summary of removed/added talents

🇨🇴 Removed: 🇨🇴 Added:
 * Improved Instant Poison
 * Improved Deadly Poison
 * Improved Evasion
 * Throwing Weapon Specialization
 * Rapid Concealment
 * Improved Garrote
 * Improved Vanish
 * Improved Rupture
 * Improved Cheap Shot
 * Improved Distract
 * Improved Poisons
 * Endurance (rogue talent)
 * Weapon Expertise
 * Sleight of Hand
 * Serrated Blades
 * Heightened Senses (rogue talent)
 * Dirty Deeds (rogue talent)
 * Deadliness

Hunter

 * Solenor the Slayer's Soul Flame buff can now be correctly removed.

Warlock

 * Succubi and Voidwalkers now speak when summoned.
 * Demonology warlock engineers can no longer have both a minion and the Demonic Sacrifice buff by using Goblin Jumper Cables to resurrect a pet that's been sacrificed. The buff from Demonic Sacrifice now vanishes whenever you have a minion active, regardless of how that minion got (back) into the world.

Items

 * Bug: The eating/drinking buffs are removed once you reach full HP or mana. This has the unfortunate side effect of preventing you from getting Well Fed if you're already at or near full health.

Interface

 * The interface options dialog is now full-screen and opaque meaning it can no longer be used while moving.
 * Raid boss emotes are now shown in center of screen like a warning.
 * Target of Target can be set to show/hide depending on if you're in a group/raid or not.