While nothing is yet confirmed (that’s what the Friday morning announcements are typically for), RBA visitor Craig sent me a link to “Primary Wave Music” of what appears to be a very typical and official-sounding press release all set for tomorrow’s DLC, and it is pretty impressive. In an apparent first for Rock Band DLC, ALL of next week’s DLC will include Pro-Guitar/Bass upgrades (for the typical $.99 upgrade, of course). Here’s the RUMORED listing:

Def Leppard – Animal (Live) *

Def Leppard – Bringin’ On the Heartbreak *

Def Leppard – Photograph *

Def Leppard – Pour Some Sugar on Me (Live) *

Def Leppard – Rock of Ages *

Def Leppard – Undefeated *

* As noted above, denotes Pro-Guitar/Bass upgrade availability for an additional $.99.

Pricing appears to be $9.99 (800 MSP) for “Def Leppard Pack 01.” No corroboration on whether this is legit or not, so you’ll have to wait until tomorrow morning for official confirmation.

UPDATE: Now officially confirmed.

[Thanks, Craig!]