It's a disc given to the press at a DC show in early 2001 (I think). Has media for a lot of upcoming games on it. It's a PC disc btw.
This was discussed in detail over at the dreamcasthistory.com forums a few years ago. I tried to search for the thread but to no avail. - maybe u want to try? The thread was very detailed and listed exactly what was on the disc.
Inside the manual it's got a load of adverts but it says: "With very special thanks to all who have helped make the first year of Dreamcast such a resounding success. Dreamcast Premiere - 3rd September 2000"
It isnt interesting to buy it and rip it, allot of files are availible on the net (and on the known press sources) The whole reason of the disc was , that journo's could use the assets in article's etc etc