Rock Band 2 for the Wii just barely made it in time for Christmas, and that's if you were lucky. So, what about the downloadable content?

That wasn't so lucky.

The downloadable content is in the final testing stages and Harmonix is working as fast as possible to deliver the 20 free bonus songs for Rock Band 2, plus an additional 30 songs from the Rock Band DLC Catalog to fans as early in 2009 as possible. As soon as we can announce a firm date, you can be sure the Rock Band community will be the first to know. -- Sean Baptiste, Rock Band Forums

Well, at least you get 30 extra songs for your trouble... that should make the wait worth it, right?