It's out today, even in Europe! Already played a few songs tonight on PS4, with my kid as well - can't play very long yet though, my broken (left) arm just doesn't have the stamina. I'm not hot on the setlist, but I should be able to download my Rockband 3 purchases which will help, and you can buy any of the previous DLC pretty much right away meaning there's 1700 songs or so to choose from.