The cross-reference Bible

I listened to the audiobook, which is the only way it is being released at this time. I liked the first part of the book which was the closest to a YA story, transitioning into a section with tragic overtones. The second half is a starship story with a conspiracy I didn't completely grasp and with a few odd coincidences. The ending is pretty solid, though, with one unexpectedly moving leavetaking episode that I admired. I know the author has spent more time as a short story writer but he did a decent job at bringing the different pieces together into a cohesive whole. Is there a sequel? I am interested in finding out.