Written by Karen Traviss, as was Glasslands and The Thursday War, it is being released in January 2014. The announcement made by Tor Books hints that we may learn more about it at the San Diego Comic Con later this year.
I'm excited about this book - I love the name (which is linked to already existing canon) and the cover is very atmospheric (who is the little girl? Naomi maybe?) It's a shame it's not coming out until 2014, but it's something to look forward to - the first new Halo content of 2014! It's looking like it's going to be a big year for Halo!