Back in KitKat, we were introduced to translucent system bars, which gave app developers the ability to make the navigation and status bars semi-transparent. Reclaiming as much of the screen as possible became an obsession for many fans as they demanded their favorite apps go "full bleed." With Android L, Google is treating us to even more flexibility by allowing developers to set their own color for the status bar, or even turning it completely transparent.
Floating Notifications brings the usefulness of Facebook chat heads to every Android app that shoots out a notification. Get an email - receive a floating Gmail icon on the side of the screen begging for attention. Tapping that icon reveals the contents of the message. Double tapping dismisses the notification, but there's a catch - before now, removing the floating notification hasn't also removed it from the status bar. Thanks to the latest update, devices running Android 4.3 will sync these actions due to integration with the new Notification Listener Service.