Patch 2.4.2 serves to provide some class and general bug fixes. Any additional changes to classes prior to Wrath of the Lich King are at the discretion of the Development Team.[1]
Druids
Talent: [Primal Fury] (Rank 2) will now be properly unlearned when it is untalented.
[Polymorph]: Mounted creatures will no longer remain mounted while polymorphed.
[Molten Armor] will now do damage while a damage absorption shield is active.
New Teleport/Portal: Theramore and Teleport/Portal: Stonard spells are available at portal trainers in their respective locations. You must be level 35 to learn these new spells.
[Mana Burn]: This spell can no longer trigger effects that require the target to be struck with a critical hit.
[Power Word: Shield] now has the correct sound associated with it and can no longer be heard from large distances.
Talent: [Power Infusion] will now consume the correct amount of mana when cast on yourself.
Rogues
Ability: [Blade Flurry]: This ability can no longer hit critters as its secondary targets and will now use a proper range calculation for all secondary targets.
Talent: [Mutilate] (Assassination) will no longer incorrectly appear multiple times in the combat log when used.
Shaman
Ability: [Frostbrand Weapon]: Rank 6 damage has been increased very slightly.
Warlocks
[Drain Soul]: Channeling of this spell will now always stop when a player target dies.
Pets: Using a sacrifice effect to kill your own pet will no longer trigger effects that should only occur when killing an enemy.
Warrior
[Sweeping Strikes]: This ability can no longer hit critters as its secondary targets and will now use a proper range calculation for all secondary targets.
PvP
Arenas
If a character's personal rating is more than 150 points below the team rating, they will earn points based on their personal rating instead of the team rating.
If the average personal rating of the players queuing for a game is more than 150 points below the team's rating, the team will be queued against an opponent matching or similar to the average personal rating.
Professions
All 23-hour profession cooldowns are now 20-hour cooldowns.
Greatly reduced the reagent cost for [Glove Reinforcements]. Also reduced the skill gain range slightly.
Quests
The categories for the quests Wanted: Sisters of Torment and Wanted: The Signet Ring of Prince Kael'thas have been fixed to now properly read as Magisters' Terrace.
The Shadowy Disguise will no longer be applied to druids while they are in Moonkin or Tree of Life form for the quests "Who Are They?"
Abilities and trinkets that trigger after killing an opponent that gives experience or honor will no longer activate after killing mobs during bombing quests.
Battlecast's Garb should now properly grant pushback resistance in addition to interrupt resistance.
The [Cursed Vision of Sargeras] now gives the buff, "Sense Demons" which can be canceled normally. Additionally hunters and druids are able to track two things at once while using the item.
It is no longer possible for pets to get stuck in place after exiting the Spectral Realm in the Kalecgos encounter.
Looting a boss while a player is outside of the instance will no longer cause the corpse to despawn in 2 minutes if the player still has loot on the corpse.
[Whirlwind] now has the correct sound associated with it.