Another Google Products received an User Interface update, this time it's the Google Books service that has got an updated interface that's more cleaner and more consistent, and is in-line to what other Google Products are getting since past month.
Google is evolving its Products design based on new Google+ interface, but it is not suitable for all Google services and consistency sometimes makes Google's tools less useful. As, in the Google Books, you can see in the screenshots above, there's now more white space and less space for books. "For example, on a 800x600 resolution almost two thirds of the screen are used for navigation elements. Even if you click the "full screen" button, Google still displays the navigation bar, the search box and the toolbar buttons, while hiding the sidebar and the book's title."
Displaying the navigation bar and the search box takes away valuable space and this is especially noticeable if you use a netbook. The new interface is not flexible or elastic, like Google intended. "The new design will soon allow you to seamlessly transition from one device to another and have a consistent visual experience. We aim to bring you this flexibility without sacrificing style or usefulness," explained Google. It seems that the new design sacrifices usefulness for the sake of consistency.