There is the demo of the library out, that I believe is scripture from the bible. But the things I think will be in it will be:
-Page Numbers
-Text color changer
-Book store
-Book points/Book bucks. (Similar to savii points/bucks.)
-Make your own books and sell them at the store.
-When wanting to make a book, you have to have a certain amount of points/bucks to make one.
-Everytime someone buys your book, you get Book points.
-Use savii's in books.
Thats all I can think of at the moment, but the upcoming Library, I think, is going to awesome!