For those not knowing what I'm talking about: http://codex.ultimaaiera.com/wiki/The_Lost_Vale

I know that tis would be asking for a lot but could somebody at GoG check if there is any chance we could get this add-on? It was never released however according to sources on Internet it was completed and ready to ship.

It was finished, yes, but as far as anyone knows every copy of the completed code was lost or destroyed. There is, unfortunately, nothing left to release.

I heard one guy has a finished copy.

Are you referring to the guy that bought the box for a boat load of cash? If so, the box didn't actually have the CD.

what a shame.

sadly as others have pointed out the expansion was finished but was canceled when it was burnt to a master and was to be sent for mass production and since then the master has dissapeared but from what I seen of the desgin docs we didn't miss much, it was going to be a short expansion about the length of Silver Seed and Forge of Virtue that just added a bit and I do mean a bit of extra story.

The real tragedy was supposedly there was plans for a enhanced CD version of Pagan that according to the myth was supposed to make the game world seemless like Ultima 7's and restore the cut content but was killed along with Lost Vale after all the complaints they received over the actual game, again I haven't seen or really heard anything about this mysterious enhanced CD version of Pagan from any creditable source i.e. those working at Orgin at the time and Richard Garriott or Warren Spector so it's probably a rumor concocted by upset fans who wanted to believe that there was something more and couldn't except that what we got was all we were ever going to get, just like how they have made Lost Vale to be this holy grail type item that would of made the game worlds better.