You might have missed the news I reported on Sunday, just hours before the finale of Lost. I'd been told two songs from Lost -- Drive Shaft's "You All Everybody" and Geronimo Jackson's "Dharma Lady" -- were coming to Rock Band via Rock Band Network. Now, I have proof it's happening.
The Xbox Live marketplace has updated with a listing for Drive Shaft. Presumably, Geronimo Jackson is floating around there, too, but I'm currently unable to pull it up via search. Based on the listing for Drive Shaft, however, the songs will cost 80 Microsoft Points ($1) via Rock Band Network.
Driveshaft is the rock group of the one and only Charlie Pace, while Geronimo Jackson is a bit of a Lost in-joke. References to the 1970s band are littered throughout the series, including a poster inside John Locke's high school locker. "Dharma Lady" is actually available on iTunes right now.
Rock Band Network tracks appear first on Xbox 360. They have to be manually brought over by Harmonix to PlayStation 3 and Wii. It's unclear if that will happen for the Lost-related tunes.