The OP and Reddit says that all DLC, and rock Band 3 are exportable to RB4. And they say that all the older titles have "unavailable" export keys. Does that mean that if you had already exported them they ARE available, WILL Be available, or NEVER available?
I'm really confused on this point, and four days from giving it as a gift, I would greatly appreciate confirmation.
Most DLC: NOW (If you bought it already, you can download it now.)
Rock Band 3: NOW (You can export the tracks now for a $15 fee.)
Green Day Rock Band: XONE NOW, PS4 SOME DAY (If you exported this game already, you can download the tracks now.)
Rock Band 1: JANUARY (If you exported this game already, you will be able to download the tracks some time in January.)
Rock Band 2: JANUARY (If you exported this game already, you will be able to download the tracks some time in January.)
LEGO Rock Band: JANUARY (If you exported this game already, you will be able to download the tracks some time in January.)
Track Packs: SOME DAY (If you exported any of these, then some day they will be downloadable.)
Caveat #1: You must stay in the same console family. (X360->XONE, or PS3->PS4). If you went from X360->PS4 (or PS3->XONE), you don't get anything.
Caveat #2: Some of the codes have expired. If you didn't export Rock Band 2, LEGO Rock Band, or Green Day already, you are too late.
Caveat #3: This is info for the US; Euro info (especially for the PS4) may be different.