This in from my agent, the very wonderful Merrilee Heifetz. (A riser is the thing at the the top of the thing in a bookstore that books by a single author are stacked in. The cardboard bit at the top of a dumpbin. I think.)

I have on my desk your amazing riser for American Gods paperback -- it lights up!
It's so cool! I've never seen anything like it!

And I am consumed by curiosity and a desire to know what on earth this cool thing is going to be like. I have visions of them lighting up in bookstores all over America...