Update: Hotfix 19

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.

Source
http://forums.riftgame.com/showthread.php?170273-Hotfix-19-NA-8-00am-PDT-4-20-11-EU-2-00am-BST-20-4-11