I'm looking over the Apple coverage from today, and I just noticed something. (I can't believe I missed it.) The iBookstore is now accessible through iTunes. It's a small detail, but it's going to have major consequences.
Have you ever tried to search iTunes for an App? It's actually pretty easy to use Google and search for "iTunes app name", and it will almost always find the app you're looking for.
Up until today, if you tried Googling "iBooks book title", it didn't work. The contents of the iBookstore couldn't be found from the web, which means Apple were likely losing sales to other ebookstores.
It took Apple 15 months to figure out that they needed to do this, and it's finally happened.