I keep getting bounced back and forth between Harmonix and Sony. Will the PS4 backup utility include Rock Band 4 DLC? I have over 800 songs and downloading them again will be very painful after I upgrade the hard drive in the system.
I believe all game data, including DLC, will be backed up and restored. However, just a reminder that PS4 now supports external hard drives, so you could keep your current data and add more storage via a USB port..