X-Men and Philosophy: Astonishing Insight and Uncanny Argument in the Mutant X-Verse will be published in about two months, at the end of March. You can see the table of contents to see the range of topics covered (and here is the Amazon entry). My chapter, "Mutants and the Metaphysics of Race", will be my first publication besides a book review on the InterVarsity four views volume on God and time, so I'm looking forward to getting a copy to hold in my hands rather than having to look at it in PDF form.
The chapter on destiny and prophecy I wrote for the forthcoming volume in the same series on Harry Potter will not be surfacing anywhere near as quickly. The publisher decided they wanted it to come out at the same time as the final movie. Since they haven't released movie six yet, and there will be eight movies, we'll have a while to wait. The current expectation for the second Deathly Hallows movie is May 2011. The book is pretty much done, but they're going to sit on it for two and a half years rather than releasing it with the sixth movie and then allowing themselves the opportunity to do a second one with the final film.