[Ausir]Actually, that's the Advanced Power Armor, the Mk II is the one that appears in Fallout 3 (yeah, that's how Bethesda decided it looks in 3d).[/Ausir] 
  
Bethblog podcast 
  
Contains some New Vegas music and confirmation about DLC announcements 'soon'. 
  
I wouldn't be surprised if Obsidian is already working on it.