I suspect that if the movie is made and is successful, they'll use the rest of the book in a sequel, which will be called Forever Peace. (They've optioned the title to that book, but not the story, so the intent is pretty clear.) I won't complain. It's an honor just to be nominated, as the actor said on the way to the bank. I'm really hoping that someone with clout will pick up the phone and say, "Dolores, see if this guy Haldeman wrote some other book we might pick up cheap." I've got a couple of dozen of them.
(A couple of years ago I asked my Hollywood agent whether he could put together a package deal: All of Haldeman's books except TFW for $X million, X being a number big enough to support me and Gay for the rest of our lives. He said no.)