Aurora

Mozilla Labs is sponsoring a Concept Series -- "... a forum for surfacing, sharing, and collaborating on new ideas and concepts. Our goal is to bring even more people to the table and provoke thought, facilitate discussion, and inspire future design directions for Firefox, the Mozilla project, and the Web as a whole."

The first featured concept is Aurora, from Adaptive Path, a vision for the future of browsers and the web. This isn't a product, it's a visualization of an interactive 3-D navigational paradigm tied to ideas about personalization, authentication, and mobility of a user's preferences, history, and context.

It's worth looking at. There's a quick guide to Aurora's interface and a descriptive concept document.