A couple of years ago, we got a some new additions to our library: lots of natural light, and movable study spaces. The technical services area moved upstairs to the former Management Library (they get a lot of sun now, too), and bricks were peeled off the facade and replaced with glorious, enormous windows.
Within the space, movable furniture, comfy chairs with cup holders, and just about every variety of table and chair. Plugs for electronics are everywhere. The chairs often have wheels, and the tables are light but sturdy.
The students love it, and use it a lot. The space is open 24 hours a day, and students are there the entire time. The Chronicle of Higher Education just wrote a follow-up to their original article, and you can find it here: http://chronicle.com/blogPost/In-the-U-of-Rochesters-Li/7499/