Patch 3.3.5 (undocumented changes)

World Events

 * Operation: Gnomeregan and Zalazane's Fall were added, though the events would not become active until September 7, 2010.

User Interface

 * The input box for typing chat lines is always visible, unless changed in the Interface settings (IM chat). Besides pressing , you can click on it, in order to chat.  The border of the input box denotes the type of the chat: white = /say, red = /yell, green = /guild (Guild Chat), pink = /tell, blue = /party.  Light blue has been added for chatting using Battle.net.
 * The chat line will now remember your last form of chat even if it was a whisper or a chat channel. Previously these two methods of communication would require repeating the /r or /1 keystrokes.
 * Secondary windows, including the Combat Log, can now be "minimized" by clicking the button above the scroll arrows.
 * The  tag has been replaced with , and the  tag has been replaced with .
 * All auctions now have a 1 silver minimum deposit.
 * From the chat window it is possible to specify the kind of report: Spam, Abuse or Improper Name (the latter might be useful on Roleplay realms (RP or RP-PvP or for inappropriate names), but is only usable on Real ID names at this time.

Items

 * Heirloom items now have a durability stat. Hotfixed.