I really like that poster. First shot of Bolg the Goblin leader. Fili and Kili are the second most prominent Dwarves which is consitent with what Nicklab suggested.If you search the internet you can find images of a lot of the toys that are being released in conjunction with the Hobbit. These include the Great Goblin and Tauriel (Evageline Lilly) and many of the Unexpected Party.
Wait a minute, Kate from Lost is in this movie?!?! How did I miss that?
Yep, she plays a Peter Jackson made up Elf, Tauriel. Although given the way the movies may break up into 3 parts, I suspect there is a chance that she might not show up until Part 2 and Part 3. Of course, PJ managed to work Arwen into the Two Towers movie even though she never appeared in that book so I don't presume to be correct that Tauriel would be limited to only the later chapters.