Update: Rift 1.4 Hotfix 4

HAMMERKNELL

 * Added a new achievement for defeating Vladmal Prime.
 * Defeating Vladmal Prime is also now required to obtain the Hammerknell Fortress achievement.

Vladmal Prime

 * Vladmal Prime no longer rotates to face his target when casting Asphyxiating Smoke.

Grugonim

 * The damage buff applied by the Bloodplague Crawler is now applied in an area of effect, triggered on its death.

Matron Zamira

 * Dark Concussion: Decreased the damage on this ability.
 * Child of Night minions have reduced health.
 * Matron Zamira will begin casting Host of Oblivion sooner.
 * Nightmare Spirit and Child of Night minions should now despawn correctly if they're still up when Matron Zamira dies.

Rune King Molinar

 * Visions of Honor now lasts longer.
 * Prince Dollin's Consuming Essence now has a longer casting time.
 * Incorporeal Revenants can now move while channeling and are vulnerable to knockbacks.
 * Forgotten Steward's buff, Honor's Sting, now has a visible component to make it easier to spot.
 * Reduced the casting time of the Forgotten Steward's Honor's Reward spell.

Sicaron

 * Unholy Contract: Increased damage bonus from this ability.
 * The Necromancer spell, Consumption, can now affect Sicaron properly.

WATER SAGA

 * Veras will appear for his scenes, but will not stun you.
 * Breaking the Bond: Using the quest item will no longer interrupt scripted scenes.
 * Wishes of the Dominata: Should update regardless of whether the vignette scene completes or not.

GENERAL

 * PvP: Reduced the Prestige bonuses from Alternate-mode Warfronts.
 * PvP Rifts: Increased the hit points of Planar Extractors, Extraction Attractors, Idols of Absorption, and Absorption Beacons by 25%.
 * Crafting: Bottle of Lifeleech now returns 10% of the damage you deal as health to you once every 2 seconds, instead of 50% ability damage reduction.
 * Fixed a case where Drake Filets could be used without consuming the item.
 * Mending Soul from guild bank funds no longer incorrectly reports not enough coin available.
 * Fixed a case where speed buffs or debuffs would fail to properly affect you when mounting or dismounting.
 * Raid Tears should no longer collapse when a zone event begins.
 * You should once again be able to select screen resolution options that have longer text than the settings window can show.

Source
http://forums.riftgame.com/official-rift-news/patch-notes/240506-rift-1-4-hotfix-4-8-00am-pdt-8-10-11-na-1-00am-gmt-11-8-11-eu.html