Huh? I'm DLC shopping just now, through the PlayStation Store, and I'm scrolling through the RBN2.0 listing inside the Rock Band 3 overshell for add-ons. The Song "Angela Surf City" by The Walkmen says "Playable only in the most recent patched version of Rock Band 2 or later." How can that be? All the other songs say "Compatible with Rock Band 3 only."
It doesn't affect me - I don't even have my RB2 disc anymore - but I feel like this could conceivably cause a problem.