Next week for DLC we have the HMX Pack (previously only available via the OXM disc). Each track is $.99 (80 Microsoft Points) or $2.99 (240 Microsoft points) for the whole pack.
"Rock Rebellion" by Bang Camaro (master)
"Shake" by Count Zero (master)
"Super Sprode" by Freezepop (master)
Due to work Sony is doing on their store they won't be adding new material for a couple weeks so this won't release on PlayStation Store this week. When they go back up with new material in a few weeks, though, it will be there lovingly waiting for you. They will appear on Tuesday, April 8th, on Xbox 360.
Talk about this week's DLC here.
DLC credits available here.
Check Rockband.com/life for stories about each week's DLC.