Because of the popularity of the first special, 20th Century Fox is pimping out the follow-up pretty hard. It's due to hit DVD and Blu-ray on December 22nd, and I imagine they'll actually air it on television at some point in 2010. A spoof of Return of the Jedi, titled We Have A Bad Feeling About This, is also being planned.
The official description for Something, Something, Something Dark Side goes something like this: "Holy ship! The Family Guy empire strikes back with another hilarious parody of your favorite sci-fi saga! May the laughs be with you as (Chris) Skywalker joins forces with (Peter) Solo and Princess (Lois) Leia to battle (Stewie) Vader and his Imperial minions. A host of new characters comes along for the wild ride, including Mort Goldman as Lando Calrissian, Chris's boss Carl as Yoda, and the Giant Chicken as the nefarious Boba Fett. It's an outrageous, out-of-this-world experience you'll "saber" for light-years to come!"
Watch both trailers for Something, Something, Something Dark Side after the jump.