Update (8:00 PM EST): The Collector's Edition of Warlords of Draenor is now available for purchase. New Box Art has also been posted!

Update (6:00 PM EST): The final boss of Warlords, legendary items, a transmog revamp, and more were discussed in this Gamescom interview.

Update (5:15 PM EST): Players will have ample time to level from 90 to 100 and experience the anniversary content (Source).

Update (4:25 PM EST): Prepare for Battle: The Pre-Expansion Iron Horde Incursion

Warlords of Draenor Release - November 13, 2014
Warlords of Draenor will be released the Thursday after Blizzcon!

Warlords of Draenor Release - November 13, 2014
An updated features trailer for Warlords of Draenor was also released today.

Lords of War - Animated Miniseries
This is similar to The Burdens of Shaohao miniseries for Mists of Pandaria. You can find a teaser for upcoming episodes here.