Rock Band 2 developer Harmonix says it's working hard to deliver DLC for the Wii version of the game "as early in 2009 as possible".
"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.
"As soon as we can announce a firm date, you can be sure the Rock Band community will be the first to know," the developer said on the game's forums.
Whether you'd recognise many of the tracks or not is debatable, but it's good to know they're still coming seeing as they were made available in the States last month for other platforms.
However, the game's currently only available on this side of the pond for 360, so what we'd really prefer is a Rock Band 2 UK release date for Wii and PS3.