Update: Rift 1.3 Hotfix 14

HAMMERKNELL

 * By the way, Hammerknell is open with the start of Phase 5 of the Waves of Madness event on 7/27/11.
 * Soulrender Zilas: Fixed his reset so he won't continue to cast while out of combat.
 * Matron Zamira: Fixed a bug causing Foul Gestation to provide less damage increase than desired.
 * King Molinar and Prince Dollin encounter issue fixed so these bosses can be re-enabled after this update.


 * Wargroups have been re-configured with this downtime and you may see some new faces in your Warfronts!

Source
http://forums.riftgame.com/showthread.php?233514-RIFT-1.3-Hotfix-14-8-00am-PDT-7-28-11-NA-1-00am-GMT-29-7-11-EU