Last week, World of Warcraft's public test realm was updated to version 5.0.4, which brought with it account-wide achievement functionality, pet battles, AOE looting, a new world event, and more!
Account-wide Achievements, pets, and mounts
In Patch 5.0.4 and beyond, the majority of your character's Achievements, pets, and mounts will be shared with your other characters. Please read: Bringing Achievements to the Account Level, by Greg "Ghostcrawler" Street
World Event: Attack on Theramore Isle
Warchief Garrosh, obsessed with assuring the Horde’s supremacy over Kalimdor, launches an all-out attack against Jaina's island home of Theramore. Though valiant Alliance defenders rush to repel the sudden onslaught, they’ll soon find themselves unprepared for the terrible scope of Garrosh's true plans…
In the Public Test Realm, we will be testing this event at specified intervals. Keep an eye on our PTR Feedback forum for more details as they become available.
Area of effect looting comes to World of Warcraft with this patch. After killing a group of enemies in close proximity, when you loot one of their corpses, the loot window will include items from all of the nearby corpses for which you have loot rights.
Head on over to the official World of Warcraft website for the full notes.