Look for the iTunes LP symbol.
It's nothing to do with bonus track but in the case of the 2CD package is a fun downloadable multi-media package that comes as part of. Has the Frank Holmes artwork gallery (not just the 66/67 stuff either), playable tracklists, a game, a timeline with rare photos…
I assume something similar is available with the downloadable version of the box.
You assume wrongly I'm afraid.
Unlike the digital version of the 2-disc set, the $79.99 version only has the tracks, no booklets or extras.