From StarWars.com:
"This November, fans of The Force Unleashed will be able to pick up the collectors edition of the game. Named The Ultimate Sith Edition, it continues the story of Starkiller, Darth Vader's secret apprentice. For the collector, the metallic case contains brand new artwork, featuring characters from the game that you all know so well. The recent downloadable content is also included so players who didn't pick up the world of Tatooine or the Jedi Temple will get their chance. Exclusive to The Ultimate Sith Edition is Hoth, where players control Starkiller as he decimates the Rebel base so iconic in Episode V."

See also:
2009 SDCC: Star Wars The Force Unleashed: Ultimate Sith Edition
Star Wars: The Force Unleashed New Single-Player Level Available For Download