So hope in the metaphysical sense. Hmmm... that depends. Ultimately Worm is a very dark story, but 

[hider=don't read unless you've read all of Worm]depending on whether the story takes place post or pre-Scion,[/hider] 
we should be within the most relatively happy parts of Worm. Emphasis on relatively since character drama will still be present, injury and death will always remain risks in the cape world, and the Slaughterhouse Nine and Endbringers may or may not drop in for a surprise visit at any moment.

But again, relatively speaking? I expect a happy, or at worst bittersweet ending like the story itself.