Due to outcry from the Telara Society for the Prevention of Cruelty to Animals, Spectral Horses can no longer be Runebroken.
Rest of notes
Hotfix #19: 4/20/11
RIVER OF SOULS
* Expect mailbox delivery of your River of Souls Event Reward Pack shortly after this update hits your shards, for each character that existed prior to the River of Souls Phase 2 start point - see the River of Souls World Event Wrapup thread on the General Discussion forum for more details on the reward pack itself.
* River of Souls event merchants will remain available for several more days to give you time for last-minute purchases. These will eventually be removed, so don't delay too much!
* The River of Souls daily quests have been removed now that the event has concluded.
* Characters are now required to be level 50 to enter the River of Souls raid zone.
* Discordant Pillar can no longer drop loot.
* Plutonus: Adjusted the placement of the 'lightning fence' during the latter phase of this encounter.
* Plutonus: Thundering Fists no longer reduces Death damage dealt by Plutonus.
* Alsbeth now spends a bit less time on the ground between air phases.
* Shadetouched Weapon Caches have been renamed so players can tell which cache awards what level of items.
* Swift Spectral Horse from River of Souls Raid has been renamed to Swift Soulbound Charger.
* Swift Spectral Warhorse from River of Souls Raid has been renamed to Swift Soulbound Warhorse.
GENERAL
* Dueling works again.
* Fixed loot windows from accidentally closing, causing you to lose out on items.
* NPCs that can fly in the air no longer get stuck unable to cast abilities.
* Corrected a badd typo in one display of the 'Riftblade' soul name.
SOULS
* Resolved an issue where Distorted Shadows [Cabalist] and Shards of Light [Sentinel] could be exploited. These abilities should once again be available for use.
* Champion: Lingering Wounds: Fixed a bug causing this ability to stop applying.
GREENSCALE'S BLIGHT [Raid]
* Prince Hylas: Should now reliably drop a full four pieces of loot.
ITEMS
* River of Souls event currencies and quest item drops will no longer appear.
* Due to outcry from the Telara Society for the Prevention of Cruelty to Animals, Spectral Horses can no longer be Runebroken.
* Shroud of Anti-Life: Corrected the text in this item's buff tooltip.