The Core 2CDs
advance CD-R copy which was leaked before the Intrada promo

Here are the only differences between the CD-R edition and the Intrada promo,
to the best of my knowledge:

-track 7, disc one on the promo edition is a different take of the same cue
on the CD-R edition. It is slightly longer, contains a more prominent chorus,
and is in a different key

-track 10, disc two on the CD-R edition is missing from the promo

-track 6, disc two on each edition is the same cue, but they are different
takes with some different instrumentation, most notably between 1:00 and 1:50.
It sounds like an additional layer of synth music was added to the mix of the
non-promo edition