Android L is an upcoming release of the Android mobile operating system developed by Google. Unveiled on June 25, 2014, and released in a beta the next day for selected Google Nexus devices, it is expected to be released to manufacturing in late-2014.
Android L introduces a refreshed notification system. Individual notifications are now displayed on cards to adhere to the material design language, and batches of notifications can be grouped by the app that produced them. Notifications are now displayed on the lock screen as cards, and notifications can also be displayed as large banners across the top of the screen, along with their respective action buttons.A do-not-disturb feature is also added for notifications. The recent apps menu was redesigned to use a three-dimensional stack of cards to represent open apps. Individual apps can also display multiple cards in the recent menu, rather than only one entry per app; for example, a web browser can show all of its open tabs as individual cards.
Android L also aims to improve battery consumption through a series of optimisations known as "Project Volta". Among its changes are a new battery saver mode, job scheduling APIs which can restrict certain tasks to only occur over Wi-Fi, and batch tasks together to reduce the overall amount of time that internal radios are active. The new developer tool "Battery Historian" can be used for tracking battery consumption by apps while in use.The Android Extension Pack APIs also provide graphics functions such as new shaders, aiming to provide PC-level graphics for 3D games on Android devices.
A developer preview of Android L was released for the Nexus 5 and 2013 Nexus 7 on June 26, 2014, as a replacement factory image flashed in Fastboot mode. The final release is expected to be made in late-2014.Source code for the developer preview was released via Android Open Source Project (AOSP) in July 2014.
HTC has committed to preparing updates to Android L for its HTC One and One M8 smartphones "within 90 days of receiving final software from Google."