Words of Radiance is very much a real thing, and you can see how large it is on this lovely image of Brandon's agent, Joshua, being crushed by the mighty tome. If you didn't know, Words of Radiance is actually longer than A Memory of Light and previous reigning champion of doorstops, The Way of Kings. Words of Radiance is even better at clubbing your opponents unconscious*. And as we are getting closer to release, we now have information on the release events for the book.
(*17th Shard does not condone assaulting people with massive tomes.)