Here's a 30 minute quick look at the Brave New World expansion, all in 1080p HD. Should note, this is not meant to be pro level play, but more of a first impressions piece with some level of overview of the new content. It was also rushed last minute, after receiving approval by PR to go live.
http://www.youtube.com/watch?v=ZenETv8dKJU
http://www.youtube.com/watch?v=ZenETv8dKJU