The following matches are scheduled for WWE Friday Night Smackdown:

WWE Tag Team Championship Match
- Carlito & Primo (c's) vs. Curt Hawkins & Zack Ryder.

- MVP vs. R-Truth.

- Ezekiel Jackson vs. Super Crazy.

- The Undertaker vs. The Great Khali.

- "Fuzzy Dice on a Pole Match" to determine #1 contender for WWE Divas Title.

- Jesse & Festus vs. Kenny Dykstra & Ryan Braddock.

- Jeff Hardy vs. Vladimir Kozlov.

I haven't seen anything online about Umaga's return. However, posted on the Izod Center website in East Rutherford, NJ is the main event for the Smackdown/ECW taping on December 30th: Triple H, Undertaker, & Jeff Hardy VS Big Show, Vladimir Kozlov, & Umaga. (Thanks to John K.)