A few funny bugs and changes i found today.
- It seems that they reduced the level of the mobs inside. In the current beta build most of the mobs are 49-50lvl but they still drop the same items (51lvl boss drop 55lvl bow..)
- The doors no longer require the Key of the City
- Killing monsters inside still grant Argent Dawn reputation.
- Some bosses still serve to Lich King while he is dead...
- Some monsters still yell that they serve to Baron Rivendare while his name now is Lord Aurius Rivendare
- Lord Aurius Rivendare still serve to Lich King
-He is now 51 Level using some kind of Mace instead of that sword
-He have ~34000 HP and still drop the same loot (maybe mount also)
- 2 guards are staying at the old door of Naxx placed inside Strath
http://img571.imageshack.us/img571/6...1610175334.jpg
and as the OP said, when Lord Aurius Rivendare is dead, NPCs from "Brotherhood of the Light" spawn all over the place