Good Question! - I had to go check myself to find out.
The ENHANCED CD put out by Gammon Records (and the one sold on RejectedUnknown.com) contains HTML script that will "autorun" when you put the CD in your computer CD drive.

It brings up this window with links to
http://www.hihowareyou.com,
http://www.gammonrecords.com and
http://www.monkeysandrobots.com/ AND to play a 30mb version of the music-video "Davinaire" that is on the CD.
If you've watched the low-res versions of the video (on
http://www.rejectedunknown.com and on
http://www.monkeysandrobots.com/ ) those copies of the video are 1.5 megs, and 5 megs each.
The CD copy of the video is 30 megs - and is a full 600 x 800 pixels and great sound quality.
So the bottom line: it has the highest quality version of the music-video "Davinare" that is available.