When I checked out wow-insider today I was almost shocked ;). The site underwent a very nice redesign. The old one was getting a bit outdated, this one is much more modern, I especially like the text being centered now !
http://www.wowinsider.com/2008/11/06/the-new-wow-insider-and-the-launch-of-wrath-of-the-lich-king/
One series of posts over there I really like is ‘ask a beta tester’. I didn’t apply to the beta, so I wouldn’t be spoiled but I have picked up a lot of nice info from this series.