The beta is now live and Gamespot just posted a few videos of it. It looks promising.
http://www.gamespot.com/guild-wars-2...norns-6350912/
Ice Drake Broodmother Fight - Guild Wars 2 Beta - YouTube
Shaemoor Garrison Skirmish - Guild Wars 2 Beta - YouTube
Disrupt Grawl Worship - Guild Wars 2 Beta - YouTube
Killing the Flame Legion - Guild Wars 2 Beta - YouTube