Hi Andy, since the MySpace for Musicians book wasn't released as an ebook, I'm afraid there isn't a downloadable update. Many of the same marketing concepts apply from the first to second book, however the way musicians promote themselves on the site has changed a bit, as have the features available. This includes things like the music player, apps/widgets, and band advertising. Additionally, the appendices in the second edition were revamped and lots of new resources added.