 Today at Google I.O. the company gave developers a first look at its latest redesign. Google is calling it Android L. Sticking with Google's new material design initiative, L brings many new changes, including a new interface for Gmail, minimalistic new Android buttons, and a shift from square to round icons. All of Google's stock apps will eventually make the transition to the new material theme, however for now the list is limited to the most used apps, like the phone dialer. Notifications are being spruced up too, with new interactive access to notifications on the lock screen. The notification pane and the lock screen are basically being combined, with a new look similar to Google Now cards. A new drop down notification is being introduced for when you're using the phone, dubbed Heads Up by Google. It's big but easy to address or dismiss. The L preview code will be available for developer devices to download later today, while the full OS release is promised for the fall. The next question is, which L candy will it be named after?