I just noticed! The book is now in MIT Press’ Fall 2017 catalog, and so you can see the cover and read the blurb they wrote about it! See the full thing here (a pdf; on page 9). Alternatively, here is the online page for it. (I can also reveal what I could not say before: Frank Wilczek kindly agreed to write a foreword for it.)
This. is. so. exciting.
I don’t know about how you pre-order yet, but when I do I’ll let you know.
Update: I also noticed that you can pre-order at a special price on Amazon! The link is here. (Pre-orders are helpful, so don’t be shy… 🙂 )