World Of Warcraft: New FAQ Update

Here is a good highlight from the update:

Will the game world evolve and change? Do you have any examples?

Yes, there will definitely be ways that players can affect the game world, and we have certain events that we plan to have players set in motion. One example would be the opening of the Dark Portal, which will entirely be a player-initiated event. We'll also have periodic events that add to the ambiance of the world, like how we had fireworks for the 4th of July. Keep your eyes open, we'll be adding more and more content as the beta progresses.

You can check out the full update over here.