Boubouille over at MMO-Champion has a bunch of great videos that he put together of some Wrath content. Some of them are data mined, while others show in-game content. All in all, they're quite an interesting thing to watch for those of you who want to see Wrath content right now.
The videos that are available are hosted on Vimeo, and we've embedded them after the break for easy viewing. You can take a look at footage form Utgarde Keep, Drak'tharon Keep, and The Nexus.
I know that some people are concerned with spoilers, so don't watch these if you don't want to see everything. They're taken from the alpha and the videos give a clear view of everything in the dungeons.