Maybe a "coming soon" label would be good there, it's kind of annoying to think it's supposed to do something when it doesn't and worse off when you do add things to that animation people will be less inclined to click on it since it doesn't do anything now and so they won't think to click on it in a few months.
Also I'd change how the "Sample Chapters" link works, it's not a good idea to have readers hunt for information by having the label missing until you rollover something without having a clear alternate method for getting to that information especially on something as important as Sample Chapters. Without rolling over that envelope a reader won't even know they are available--which is a problem--and while chances are most people will roll over the graphic it's best not to assume that such an event will happen all the time.
I know you don't have a lot of control over the websites, but it's something to mention if the situation arises.
