WildHobgoblin: Wait, Arx Fatalis is disappearing? That's the first I heard about this. How did you hear about that?
Grargar: Nothing official. When Arx Fatalis was first released on GOG, its developer/publisher (Arkane Studios) was still independent. 2 years later, the company would be bought by Zenimax, the parent company of Bethesda. There was talk, then, that Zenimax (despite not having signed a deal with GOG), would honor the deal between GOG and Arkane Studios. Since Bethesda/Zenimax haven't signed with GOG as of yet, though, there is fear that when the contract between GOG and Arkane Studios expires, it won't be renewed and, as a result, the game will have to be removed from GOG. A fear that got stronger after the removal of the Fallout games.
Well, that would be a bummer...
Still, good to know. It's one of these games that I was always going to pick up "when I get around to it". Since it's never on promo, I always figure that I own enough games already, and it can wait a bit longer.
It was quite similar with Blade of Darkness, which was then removed on very short notice. So, Arx Fatalis has moved up on the wishlist now quite a few steps ;)