From Whatever -
Redshirts: A Novel With 3 Codas. I know what you're thinking. However, Scalzi has already confirmed that it's not a Star Trek novel. Based on the title, I suspect it's intended to be quasi-humorous, if not to the same extent as Scalzi's excellent The Android's Dream.
Unfortunately, the title is all we've got to work with at the moment. Scalzi has read from the book at several conventions but Scalzi swore everyone to secrecy and surprisingly, no details have leaked out. Which is an incredible feat in and of itself.