Blizzard is getting ready to sit down with several lead designers to discuss class and PvP changes that will be happening in Warlords of Draenor. As part of that plan they want you to submit your questions over on their forums for the hosts.
Personally, I'm going to ask what they plan to do about increasing participation in PvP. It's something that I've been wondering for awhile and can't come up with a good answer to. I get that making things more accessible and have a smaller barrier to entry is going to be part of it, but I'm wondering what else.
Crithto's announcement of the question gathering is as follows. There is no date as to when the video will be released.