I just learned about this Youtube channel:
http://www.youtube.com/user/finalbosswow/videos
There have been some good interviews about the progression raiding scene. For example there have been interviews with:
* Sco (MT) & Rogerbrown (Raid Leader) from Method
* Alex from Fatboss
* Riggnaros (MT & Raider Leader) from Blood Legion
* Daught from Midwinter (former Suramar player and leader of Unreasonable, aka Seles)
I think it is pretty interesting to hear details about the progression raiding scene, guild leadership, class balance, etc... It should get even more interesting in WoW: Warlords of Draenor with guilds like Paragon and Vodka returning to the big race.