Major changes:

1. Complete rewrite of Azjol'Nerub, including:
   • Krik'thir's watchers no longer engage on a timer, but after the death of other watchers, in sequence. Krik'thir only engages once all watchers are dead.
   • Hadronox event rescripted in full to be Blizzlike, including Blizzlike add pack handling, add spawns, gate web event, and fixed web grab hitting targets through the floor
   • Rewritten Anub'arak logic to prevent adds getting stuck on ramp leading to platform and prevent submerge spikes from triggering after early emerge
2. Fixed missing dynamic object despawns (such as Volleys and Blizzards lasting forever), thanks in part to AzerothCore's open source development
3. Wintergrasp: Each consecutive loss of a faction in Wintergrasp makes the faction gain 1 Tenacity on next fight, to balance who owns the keep
4. Rewritten threat handling to rectify threat dropping in instances

Bug fixes:

1. Ulduar: Fixed Ulduar herb respawns if no players in instance for 30 min (Blizzlike)
2. Ulduar: Rewrote Kologarn corpse bridge
3. Packets: Fixed race condition in setting client cache on certain creature spawns in TOGC LK, inside Halion, and Ragnaros spawn
4. Packets: Fixed possible eternal ress loop when out of bounds of continents (mostly relevant for Outland)
5. Auras: Fixed erroneous flight on map changes and in instances, if player was on a flight mount when changing maps
6. ICC, BQL: Fixed Minchar quest not completing properly and BQL fight auras not expiring on fight end
7. ICC, Sindragosa: Added Valithria completion check on pull
8. ICC, Gunship: Added safeguards against gunship encounter becoming stale/stuck on wipe
9. ICC, LK: Fixed LK HC Valkyrs prematurely setting below 50 pct var, fixed Life Siphon
10. World: Fixed players falling through continents/world maps using mechanics like Blink and Charge
11. Black Temple: Fixed Reliquary pullable through floor above
12. Wintergrasp: Fixed Tenacity not applying to vehicles
13. Obsidian Sanctum: Fixed miniboss dragon despawn race condition and stale miniboss dragons on certain wipe scenarios
14. Reputation: Fixed missing faction check in certain reputation awards that caused some quests to reward Horde reputations to Alliance characters and vice versa
15. Mounts: Fixed Invincible and X-53 rocket not working properly with Feathers of Azeroth
16. Ahune: Fixed race condition on loot chest generation
17. Spells: Scripted Lucky spell (Dalaran fountain coin fishing spell)
18. Spells: Exempted targets outside of LoS/behind Ice Tomb from Blistering Cold pull
19. Ruby Sanctum: Fixed Halion corporeality to show on both sides
20. Transports: Fix race condition sometimes causing crashes on removing players from transports
21. Pit of Saron: Fixed Tyrannus combat locking players on the intro dialogue

Shadows:

1. Fixed crash from race condition in Discipline Priest healing actions
2. Fixed Shadows' looting of quest game objects
3. Shadows Resto Druids now use Lifebloom on Clearcasting procs
4. Improved Festergut tactics
5. Fixed Shadows teleporting around sometimes after getting stunned/rooted
6. Fixed Shadows player object becoming stale on map change (previously, Shadows would not "despawn" if a player saw them change maps)
7. Fixed Shadows walking through closed doors on BPC
8. Improved Shadows mute handling
9. Rescripted ICC gunship encounter tactics, improved Valithria healer tactics, LK tank tactics, fixed Shadows falling through floor on Rotface, fixed Shadows stuck behind LoS pillars on LDW
10. Added Forge of Souls tactics
11. Added Pit of Saron Tyrannus tactics and damage reduction on Ick as Shadows eat a lot of AoE
12. Added Utgarde Keep Ingvar the Plunderer tactics
13. Fixed buff logic for Kings/Sanctuary split, Battle/Commanding shout, and Rockbiter weapon overriding Shaman weapon enchants
14. Fixed Shadows getting teleported into the air near gunships if approaching wrong faction's gunship
15. Fixed Shadows pulling Valithria prematurely and improved tactics inside of dream/nightmare portals

Features:

1. Instance resetter at mall: Added free reset timer check, permit full account reset from one character
2. New characters now join world chat on first login
3. Added specific pet biscuit and certain end-game potions and feasts to always sell on AH
4. Re-implemented VIP repair to fix previous race condition
5. Added VIP extension option to Twiggy
6. Re-implement legacy transfer system (Altoholic and EveryQuest-based transfers)