At some point this week Harmonix will finally launch the Rock Band
music store, a fully integrated shop allowing players to preview and purchase tracks without ever leaving the comfy confines of the game. Songs in the store will provide a difficulty metric for each instrument and the DLC can be organized by artist, genre, difficulty and year of release.
Harmonix tells us that this is the "only patch planned" at this time, so players looking to streamline their multiplayer registration experience or do Band World Tour online are gonna have to sit tight. Also, be sure to continue checking with us every Friday for the latest Rock Band
DLC announcements with Rock Band Weekly