The Comic Con 2013 MLP Panel included a full 5 minutes of animatics from Season 4. They haven't gotten far enough in production for full animation yet, but these things reveal more than a single clip ever would have.
Needless to say, season 4 is going to rock.
Head on down below the break to check it out in SD. With Comic Con going on, the networks everywhere here are incredibly stressed, so HD might be a while. There is a bit of focus blurryness between clips, but otherwise animatics aren't here for the graphics anyhow!
(HD complete, or as HD as a camera recording of a screen can be)
HD Still processing away the double, should be cut in half in a few minutes.