Back in 1998 (I dont remember the exact year) I was working on Top Gun - Hornets Nest
http://www.mobygames.com/game/window...s-nest/credits
(Michael "Na****e" Horn is me)
There was an EXTREME push to get the Gold Master (the gold disc that is sent to the publisher for mass production) out before Halloween, so that it could be on store shelves for Thanksgiving. We worked 36-48 hour days on this push. We met our Halloween deadline and moved on to the next project. We all (the developers) were waiting (impatiently, I might add) to head to the stores and see our work on the shelves. When it finally showed up, we bought like 10 copies each. OK *I* bought 10 copies. I went home and installed the game only to find out that the publisher only wrote the soundtrack tracks to the disc and not the game data. Basically, back then, I don't know about now, "Red Book Audio" was the soundtracks in game. They were CD compatible so you could put the game dics in your CD player and listen to the game soundtrack. The data, the actual game, was on the last track.
So essentially, we missed the 1998 Christmas season because the publisher forgot to put the game data on the game CD.
So, what *I* think happened was that Turbine had intended to release Mod 9 in a retail SKU, but the publisher forgot to put on the game track. Now, there are millions of useless "CD Pigions" out there and we are waiting on the second pressing or Mod 9.
FWIW, YMMV