An updated list of preorder items had been available on the BigBadToyStore website, but are now no longer listed.  Fortunately, it was summarized here by That Figures, and includes:

3.75” Goblin King Playset ($44.99)

3.75” Deluxe Beast Pack Series 1 -Goblin King with Thorin ($32.99)

3.75” Collector Pack – Bilbo, Thorin, Dwalin, Kili, Fili ($29.99)

3.75” Beast Pack Series 1 – Fimbul (Orc) with Worg* ($19.99)

3.75” Deluxe Battle Pack Series 1 -Bolg & Gandalf ($17.99)

3.75” Figure Two-Pack Series 01 -Bilbo Baggins & Gollum ($14.99)

3.75” Figure Two-Pack Series 01 -Legolas & Tauriel ($14.99)

3.75” Figure Series 01 – Bilbo Baggins ($9.99)

3.75” Figure Series 01 – Gandalf the Grey ($11.99)

3.75” Figure Series 01 – Thorin Oakenshield ($11.99)

3.75” Figure Series 01 – Legolas ($11.99)

3.75” Figure Series 01 – Grinnah ($11.99)

6” Deluxe Collector Figure – Azog ($21.99)

6” Figure Series 01 – Thorin Oakenshield ($14.99)

6” Figure Series 01 – Legolas ($17.99)

6” Figure Series 01 – Tauriel ($17.99)

6” Figure Series 01 – Bilbo Baggins ($17.99)

6” Figure Series 01 – Gandalf the Grey ($17.99)

Yeah, Bolg!  Azog and Bolg!  Whoohoo!  Makes me think we are going to be seeing Bolg in the first movie to actually *gasp* establish the character before tossing him into the Battle of Five Armies with nothing but a footnote to explain his existence :-)

I am finding it strange that Bolg is listed, but not Beorn, or Radagast.  Hmm.  But neither are a whole lot of other characters, so we will see.