Eva Gabrielsson, Larsson's long-time partner, has said that she has the fourth manuscript and can finish it if she has the permission of Larsson's family. They don't seem to be as willing to though.
I will be looking over the news of this and see what will be happening, but for now, all we can look forward to is the American version of "Girl with the Dragon Tattoo".
More updates to come!
Peace and Fangs,