Below you can see a changelog, which was made on 5.4.2 for two week, from 25.04.14 to 10.05.14:
General:
- Fixed appearance of coordinates after changing factions.
- Fixed game event Noblegarden.
- Fix 1 reason of server crash.
Dungeons and Raids:
- Implemented new raids:
* Terrace of Endless Spring, available all the difficulties, but all the bosses only 10 normal, other difficulties have only 2 boss.
* Heart of Fear, available only first 4 bosses on 10 normal.
* Dragon Soul, available all the difficulties, all the bosses except Madness.
* Throne of the Four Winds, available all the difficulties, all the bosses except the last.
* The remaining bosses and other modes of difficulty in these raids wait in the 11th update.
- Mogu'shan Vaults:
* Rewritten scripts of all bosses available all except the last.
* Fixed loot and stats the bosses at all difficulties.
- Zul'Gurub:
* Fixed bug with eveydom boss Jin'do the Godbreaker.
- Grim Batol:
* Fixed excessive physical damage bosses.
- Halls of Origination:
* Fixed faction mobs in instance.
- Nexus:
* Fixed a bug where it was impossible to kill the last boss.
- Vault of Archavon:
* Fixed bugs with the boss battle mode Archavon the Stone.
- Azjol-Nerub:
* Fixed scripts bosses, dungeon now works correctly.
- Trial of the Crusader:
* Fixed immunities for boss Gormok the Impaler.
- Icecrown Citadel:
* Fixed loot from bosses: Lord Marrowgar, Festergut, Rotface.
- The Steamvault:
* Fixed a bug where it was impossible to get to the last boss.
- The Arcatraz:
* Fixed a bug where it was impossible to get to the last boss.
- Magister's Terrace:
* Fixed scripts bosses, dungeon now works correctly.
- Tempest Keep:
* Fixed excessive damage from the boss Kael'thas Sunstrider.
- Sunwell Plateau:
* Fixed a bug where it was impossible to kill the boss Kalecgos.
- Blackrock Depths:
* In dungeon added necessary mobs and objects.
- Ahn'Qiraj:
* In dungeon added necessary mobs and objects.
- Uldaman :
* Fixed the ability to attack the boss Archaedas.
- Molten Core:
* Fixed a script boss Majordomo Executus.
- Razorfen Kraul:
* Fixed bugs with doors, dungeon now works correctly.
* MOP and Cata instance fixes not actual for Fun realm.
Spells:
Shaman:
- Fixed spell
http://www.wowhead.com/spell=117014.
- Fixed bug with cooldown, if after cast
http://www.wowhead.com/spell=51505 proc
http://www.wowhead.com/spell=77756.
- Fixed
http://www.wowhead.com/spell=77223.
- Fixed
http://www.wowhead.com/spell=120668.
- Fixed
http://www.wowhead.com/spell=77222.
- Fixed radius for spell
http://www.wowhead.com/spell=98008.
- Fixed proc for spell
http://www.wowhead.com/spell=131557 after use
http://www.wowhead.com/spell=79206.
- Fixed spell
http://www.wowhead.com/spell=51730.
- Fixed spell
http://www.wowhead.com/spell=118473.
- Fixed pve set bonus
http://www.wowhead.com/spell=131554.
- Fixed bug, when
http://www.wowhead.com/spell=23881 did not increase the crit chance.
Death Knight:
- Rewrite rune system.
- Fixed spell
http://www.wowhead.com/spell=45529.
- More correct work spell
http://www.wowhead.com/spell=50842.
- Fixed affect
http://www.wowhead.com/spell=77515 on spell
http://www.wowhead.com/spell=55090.
- Fixed pvp set bonus
http://www.wowhead.com/spell=131542.
- Fixed pve set bonus
http://www.wowhead.com/spell=144899 +
http://www.wowhead.com/spell=144907.
- Fixed
http://www.wowhead.com/spell=58642.
- Fixed
http://www.wowhead.com/spell=59336.
- Fixed
http://www.wowhead.com/spell=58680.
- Fixed
http://www.wowhead.com/spell=58618.
- Fixed
http://www.wowhead.com/spell=58620.
- Fixed
http://www.wowhead.com/spell=59327.
- Fixed
http://www.wowhead.com/spell=58629.
- Fixed
http://www.wowhead.com/spell=58616.
Paladin:
- Fixed spell
http://www.wowhead.com/spell=54428.
- Fixed
http://www.wowhead.com/spell=54938.
- Fixed bug, when bonus from glyph
http://www.wowhead.com/spell=115931 worked even without installing.
- Fixed pve set bonus
http://www.wowhead.com/spell=144580 +
http://www.wowhead.com/spell=144566.
- Fixed
http://www.wowhead.com/spell=76672.
- Fixed
http://www.wowhead.com/spell=146956.
Rogue:
- Fixed spell
http://www.wowhead.com/spell=79152.
- More correct work talent
http://www.wowhead.com/spell=108212.
- Final fixes for talent
http://www.wowhead.com/spell=108208.
Warrior:
- Fixed talent
http://www.wowhead.com/spell=12292.
- Increased damage spell
http://www.wowhead.com/spell=85288 by 20% in accordance with the hot fixing patch 5.4.
Hunter:
- Fixed talent
http://www.wowhead.com/spell=82726.
- Fixed a bug where you could not use more 1 object tracking.
Druid:
- Fixed spells
http://www.wowhead.com/spell=88747 +
http://www.wowhead.com/spell=145205 +
http://www.wowhead.com/spell=102791 +
http://www.wowhead.com/spell=88751.
Spells, general:
- Fixed spell
http://www.wowhead.com/spell=132365 for all classes.
Fixed quests:
http://www.wowhead.com/quest=28237
http://www.wowhead.com/quest=9567
http://www.wowhead.com/quest=9703
http://www.wowhead.com/quest=27101
http://www.wowhead.com/quest=10514
http://www.wowhead.com/quest=26208
http://www.wowhead.com/quest=26551
http://www.wowhead.com/quest=26775
http://www.wowhead.com/quest=12550
http://www.wowhead.com/quest=25410
http://www.wowhead.com/quest=33343
http://www.wowhead.com/quest=12094
http://www.wowhead.com/quest=30078
http://www.wowhead.com/quest=29912
http://www.wowhead.com/quest=10588
http://www.wowhead.com/quest=12546
http://www.wowhead.com/quest=10838
http://www.wowhead.com/quest=30136
http://www.wowhead.com/quest=30072
http://www.wowhead.com/quest=26537
http://www.wowhead.com/quest=14378
http://www.wowhead.com/quest=31277
http://www.wowhead.com/quest=6134
Fixed npcs/objects:
http://www.wowhead.com/npc=63974
http://www.wowhead.com/npc=7783
http://www.wowhead.com/npc=30481
http://www.wowhead.com/npc=33266
http://www.wowhead.com/npc=33195
http://www.wowhead.com/npc=15476
http://www.wowhead.com/npc=47959
http://www.wowhead.com/npc=51988
http://www.wowhead.com/npc=57673
http://www.wowhead.com/npc=55647
http://www.wowhead.com/npc=63920
http://www.wowhead.com/npc=43454
http://www.wowhead.com/npc=56113
http://www.wowhead.com/npc=57673
http://www.wowhead.com/npc=57671
http://www.wowhead.com/npc=40762
http://www.wowhead.com/npc=64032
http://www.wowhead.com/npc=36163
http://www.wowhead.com/object=203281
Do not forget to clear the cache of the game after the update.