(Already on the PTRs)

Plague Wing
[li]Players should no longer be able to fall from the balcony in the plague wing.
[li]Heigan the Unclean’s entry door will not open until Noth the Plaguebringer has been killed.
[li]The Plague wing entry room will now completely respawn when a group wipes.

Spider Wing
[li]Anub’rekhan: Fixed Frozen Rune positions in Anub'Rekhan's room. They were previously unselectable / unusuable.
[li]Anub’rekhan: Fixed Locust Swarm and Impale animations.
[li]Spell effects will appear more aligned on several mobs.

Abomination Wing
[li]Patchwerk: The door beyond Patchwerk will now only open if he is killed.
[li]Patchwerk: Aggro shouts have been slowed down so he doesn’t spam introductions in chat and audio.
[li]Patchwerk: He will no longer travel outside of a given range.
[li]Thaddius: Zone-wide shouts will no longer have audio vocals.
[li]Embalming slimes are now on a three minute respawn timer.
[li]Sewage slimes are now on a three minute respawn timer.
[li]Patchwork Golem no longer looses aggro on war stomp.
[li]Mad Scientists: Fixed problems with portraits and textures.

Deathknight Wing
[li]The endless slime pits in the Deathknight wing now have proper collision and slime.
[li]Deathknight Understudies have been changed from level 61 to 60 and their Shadow Resistance set to 0. This should make the regular periodic resists happen less often.
[li]Deathknight Understudies now lose aggro after casting Mind Exhaustion.
[li]Shades of Naxxramas no longer infinitely spawn a portal.
[li]Living poison slimes before Patchwerk have been spaced out a little more to give players a little more room to try and avoid them.

General
>>>>>>>>>>>>>>>>>>>>[li]Mr. Bigglesworth will no longer respawn. R.I.P. =( <<<<<<<<<<<<<<<<<
[li]The "Echoes of War" quest requirements were changed from requiring the Heart of Anub'Rekhan and the Head of Instructor Razuvious to 8 Deathknight Captains and 3 Venom Stalkers.
[li]Various creatures now move faster.
[li]Stealth detection has been applied to most creatures in the zone.
[li]All Non-Boss creatures in the zone now has a leash distance.
[li]Added vendor Jimmy McWeaksauce to the center of Naxxramas. Jimmy sells the following items and is generally a cool guy: [ul][li]Free Repairs
[li]Free Res sickness removal
[li]Spell reagents
[li]Tome of Tranquilizing shot
[li]Rogue poisons[/ul]