Not true:
- Soundtrack.
- "Making of D:OS" documentary
- Art book
- Digital map
The trunks are probably duplicateable in the editor, but it depends on how complicated Larian makes the interaction with the story and world.
I mean in game digital items. If they wanted the soundtrack and artbook. Making of the game and all. It might end up for sale after release~
EDIT: I am not sure what the original poster is after. so I just guessed in game items ._.