There are other improvements brought about by the new patch, besides the ones done to all the classes. Now we will introduce the improvements and changes done to the PvP, arenas, professions and other items.
PvP
Medallion of the Horde and Insignia of the Alliance are now available for purchase on PvP vendors.  For the purposes of testing these currently cost only gold to buy.
Arenas
Buffs that have 30 seconds or less remaining will be removed once the game starts. However, the mage spell 'Invisibility' is not affected by this change.
Professions
Leatherworking
Drums now cause a Tinnitus effect, preventing affected targets from receiving beneficial effects from other drums for two minutes.
Mining
Smelt Elementium must be relearned by players who still wish to know the spell by visiting a trainer in Blackwing Lair.
Quests
Alliance characters on the 'Check in With Bizie' quest in Borean Tundra can now ask Kara Thricestar for a flying machine ride out to Bizie Wrenchshanker.
The 'Escape from Winterfin Retreat' quest is now named, 'Escape from the Winterfin Caverns'. The escort is shorter and no longer requires a prerequisite quest to get a key.
There is now a new murloc questgiver named Glrglrglr within the Winterfin Caverns. This questgiver needs you to ge the key to his cage so that he can be set free. This is not an escort quest.
Fewer cannonballs are now required for the Alliance quest, 'Danger! Explosives!'.
Petrov's Cluster Bombs no longer cause caster procs during the Alliance quest, 'Break the Blockade'.
The Alliance quest, 'Break the Blockade' no longer caps out at revered Valiance Expedition faction.
During the Alliance quest, 'You're Not So Big Now!', Crafty's UltraAdvanced ProtoTypical Shortening Blaster no longer has a chance to transform the character into a magnataur.  Instead it has a chance to transform the character into the likeness of Crafty Wobblesprocket.
In Dragonblight, the 'Ley Line' questline was reworked so that players are led into and must first complete the quests at the Ruby Dragonshrine before they will be given an audience with Queen Alexstrasza.
The quest character Kor'ghan (Finding the Antidote) was moved to just outside the Cleft of Shadow's poison vendor.
User Interface
Error messages should play less frequently.
Tradeskills can now be linked by shiftclicking the tradeskill icon.
Quests can be shared with party members at any distance.
Quests can be shared with party members by linking the quest into party chat.
Quests can be shared in raids but not battlegrounds.
A 5 minute timer will appear over the player's unit frame showing the countdown until your PvP flag is cleared.
Items
Druids and Shaman can now use items while shapeshifted.
The Abyss Shard has been changed to grant a passive 15 stamina bonus, but no longer removes the soul shard requirement from casting a voidwalker.
Devilsaur Eye now increases your pet's attack power for a short duration instead of increasing its critical strike chance.  It also provides a small amount of passive Agility.
World Environment
You can no longer gain weapon or defense skill while fighting the following creatures: Servant of Allistarj, Servant of Grol, Servant of Razelikh, and Servant of Sevine.
Stormwind now has a harbor and dock with a ship that grants passage to Northrend

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