During an I/O session called "Structure in Android App Design," Google leaked a new design for Gmail ahead of any official announcement. The slide shows a revamped navigation drawer and a conspicuous lack of the action bar on the bottom. Functions currently located at the bottom of the screen (like compose and search) have moved up, streamlining the inbox's vertical structure. Meanwhile, the new navigation drawer makes it easier to access features like the priority inbox and individual labels without having to open separate screens, as is the case on the current Gmail app. There are a few cosmetic changes as well, like the larger stars in the inbox. It's hard to tell from the image, but one might assume that the navigation bar scrolls down to reveal important functions like trash, spam, and drafts. It doesn't appear that the inclusion of the screenshot was given much thought -- indeed, presenter Jens Nagel left in his personal Gmail address, now blurred out. Stay tuned -- we'll update you as official word on a redesign comes in.