This website has an article up with some new spoilers (some old, some speculation) from this years DragonCon, during TORn's panel.
The most interesting bits:
Although Sylvester McCoy as Radagast the Brown is rumored to have been included in the London filming of the White Council scene with Saruman, Gandalf, Galadriel, and Elrond (pictured above), he was not in White Council scenes screened at this year's San Diego Comic Con.
Figwit returns! Bret Mackenzie will appear in The Hobbit as Lindir, an elf in Rivendell who is present during a poetry reading by Bilbo at Elrond's house.
Thrain and Thror appear in the first film and we will most likely see them in earlier (and happier) times as part of sequences that illustrate the dwarven race of Middle-earth in its glory days. The panel was split on whether we'll see the history of Moria, such as the battle at the Gates of Moria.
We'll see Legolas and his father Thranduil spar.
What Smaug looks like is being kept a complete secret. During a five-week stint that Larry Curtis, the DragonCon Tolkien track coordinator, spent working on The Hobbit there were absolutely no trace of the dragon anywhere on or off set. The offices of illustrators John Howe and Alan Lee were similarly vacant of Smaug sketches.
And most importantly:
The OneRing folks also revealed some exclusive set pics, but requested that they continue to be kept hush-hush
Come on TORN .... hand 'em over!!!
(This post was edited by DanielLB on Sep 4 2012, 3:01pm)