Yes, they also said that UI mods are a possiblity down the road. It only makes sense to launch and get your game going as you want it, and not with a bunch of community mods to screw things up worse then they could be at launch.
Yep, at the end of Paul Sage interview #1 - http://www.gameinformer.com/b/features/archive/2012/05/07/the-challenge-of-elder-scrolls-online-an-interview-with-the-creative-director.aspx