OS X Lion Developer Preview 3 is out. We're not totally sure what all is new yet, but some early stuff spotted by MacStories includes: "A new boot animation, new graphical elements in the Finders toolbar, new desktop wallpapers and the Reading List, now enabled in Safari."

We're getting close, people. Interactive screensavers! Castles in the sky! And, uh, things! [MacStories via MacRumors]