First, you see Smaug at the end of the trailer. That's right. You see the great lizard in the trailer. His face, not just a small bit of him. Now we only see his face and neck, but that's still a huge deal. We also get to see some of Thranduil's Elven kingdom, Orlando Bloom's return as Legalos, Bard the Bowemen (Luke Evans), and Tauriel in action. Thranduil (Lee Pace) speaks, and probably has the most lines in the trailer, but we also get some lines from Legalos, Tauriel, and Bard.
There's a bunch of action shots, including the elves fighting the orcs of Azog, the dwarves travelling by barrell, and a little bit of spiders. Gandalf (Ian McKellan) and Radagast (Sylvester McCoy) explore Dol Godur, and share some ominous lines before being attacked.
Enough explaining what you see and hear, without further ado, the trailer is below:
On December 13th THE HOBBIT: THE DESOLATION OF SMAUG hits IMAX 3D and RealD 3D screens.