Thank you, Harmonix!
Finally, alongside the three-pack of songs from one band, we're getting a bonus tune from a completely different group. And since I'm not a big fan of Blink-182, I'm happy to have The Clash included as well. "Rock The Casbah" is the first song I'm going to buy from the Rock Band Music Store in quite a while!
As for the Blink-182, you'll get "The Party Song," "Stay Together for the Kids," and "Up All night." Those are available together as the Blink-182 Pack 03 for $5.49 if you want to save a little money over buying them separately for a couple bucks a pop. And "Rock The Casbah" and "Up All Night" are the only ones with the $.99 optional Pro Guitar and Pro Bass expansions.