Actually I consider Over a Torrent Sea to be the most hard-SF of my Trek novels, the one that's the most grounded in scientific extrapolation and depends the least on more fanciful stuff like transporters and telepathy and the like.
Looking forward to it - because I haven't read yet, I could not recommend the book. I'm only now delving into the various relaunches. Owning a Kindle somehow, inexplicably makes me set apart more time for reading, and now - finally! - going through all those unread relaunch novels doesn't seem as daunting a task as it did before.