It's supposed to have a sequel, not that you could tell that from anything about the book. I read it, like you apparently, without knowing that and found it a deeply peculiar experience.

Someone told me that they found one of the nonwhite character's storylines to be unfortunate, which when it was fresher in my mind made me say "ooh, yeah, ouch" but I haven't actually re-read it since so I can't say now.