Will the current 40-player-capped raid dungeons remain capped at forty players even once the expansion releases and players can level to 70?

At this time, we have no plans to change the player caps of our existing raid dungeons.

Will there be any more 40-player-capped raid dungeons?

At this time we have no plans to create additional raid dungeons that accommodate more than 25 players.

Are there any plans to introduce new outdoor raid encounters, such as Lord Kazzak and Azuregos?

We definitely have plans to implement additional outdoor raid encounters. We'll announce more details on this content as we get closer to introducing it.

Are there plans to allow for pet scaling in the end-game raids and dungeons?

Yes, we do plan to implement a scaling system for hunter and warlock pets so that they remain viable as players progress into more dangerous areas of the game.

Will we see changes to the reset times of the current end-game instances?

It's possible, but there are no plans to do so at this time.

Will it be possible to kill Illidan in the Burning Crusade?

Illidan doesn't think so. As a matter of fact, he's probably thinking about destroying your character for simply entertaining the thought.