Right from the website:
......"With this second special, we knew we had to do something a bit different, something more," responded the other Robot Chicken co-creator, Matthew Senreich. "With that in mind, we decided to focus on the bounty hunters a bit and explore their stories. It's a geek-fest for us all."
Carrie Fisher, Billy Dee Williams Voice Roles in Robot Chicken: Star Wars Episode II
Adult Swim announced that Carrie Fisher will return to voice Princess Leia in the new special, and Billy Dee Williams will voice Lando Calrissian. Green and Senreich have convinced Ahmed Best to return as Jar Jar Binks, Seth MacFarlane as the Emperor Palpatine, Breckin Meyer as Admiral Ackbar and Boba Fett, and Conan O'Brien as Zuckuss, and Donald Faison will return, possibly as Evazan and/or Mace Windu. Andy Richter has also joined the cast as an as-yet undetermined character.
Seth Green, in addition to directing the episode, will also voice a number of characters, including Ponda Baba. As per usual, ShadowMachine Films’ Alex Bulkley and Corey Campononico will assist on the animation front, in association with Green and Senreich's Stoopid Monkey Productions.
Robot Chicken: Star Wars Episode II is scheduled to air on November 16 at 11:30 p.m. (ET/PT).........