In the past, Google has released Android 5.0 and 5.1 Lollipop updates. The company is said to release an Android 5.1.1 Lollipop update "in the coming days." Each Android Lollipop version has unique fixes and improvements such as Smart lock feature (version 5.0); Device protection (version 5.1); and Fix for memory leak problem (version 5.1.1). A table below shows the comparison of the three Android versions.
Google's Android 5.0 Lollipop will be running a device recently launched by Dell, the new Venue 10 7000. Dell's 10.5-inch tablet is built with an Intel Atom Z3580 processor, 2 GB of RAM, 8 MP rear-facing camera, 2560 x 1600 display resolution, and 7000mAh battery. It is also 6.2mm thin. The tablet is set to be released in May in the US, Canada, and China for $499.00.
Meanwhile, Android 5.1 Lollipop updates for Nexus 7 owners are expected to be rolled out soon. Google has reportedly released the factory images for the Nexus 7 (3G) Android 5.1 Lollipop update. Nexus 7 owners are advised to check the update from time to time.
However, the Android 5.1 Lollipop had a memory leak problem, which was complained by Android Lollipop users. Nevertheless, this seems to be on the path of being fixed as an Android 5.1.1 Lollipop was reportedly spotted in the Android SDK Manager. Further, reports pointed Android Police co-founder, Artem Russakovskii, as saying that an "Android 5.1.1 for both Android phones/tablets/etc and Wear will be released 'in the coming days.'"
Below is a table comparing the features of Google's Android Lollipop OS.
| Android 5.0 Lollipop   features | Android 5.1   Lollipop features | Android 5.1.1   Lollipop features | 
|  Android Runtime (ART) with ahead-of-time (AOT) compilation   and improved garbage collection (GC), replacing Dalvik that combines bytecode interpretation   with trace-based just-in-time (JIT) compilation
  OpenGL ES3.1 and Android Extension Pack (AEP) on   supported GPU configurations
  Recent activities screen with tasks instead of   applications, up to a configured maximum of tasks per application
  Vector drawables, which scale without losing definition
  Support for print previews
  Material design, bringing a restyled user interface
  Refreshed lock screen, no longer supporting widgets
  Refreshed notification tray and quick settings pull-down
  Project Volta, for battery life improvements
  Searches can be performed within the system settings for   quicker access to particular settings
  Lock screen provides shortcuts to application and   notification settings
  Guest logins and multiple user accounts are available on   more devices, such as phones.
  Audio input and output through USB devices
  Third-party applications regain the ability to read and   modify data located anywhere on external storage, such as on SD cards.
  Pinning of an application's screen for restricted user   activity.
  Recently used applications are remembered even after   restarting the device.
  WebViews receive updates independently through Google Play   for security reasons, instead of relying on system-wide vendor updates
  Addition of 15 new languages: Basque, Bengali, Burmese,   Chinese (Hong Kong), Galician, Icelandic, Kannada, Kyrgyz, Macedonian,   Malayalam, Marathi, Nepali, Sinhala, Tamil and Telugu
  Tap and Go allows users to quickly migrate to a   new Android device, using NFC and Bluetooth to transfer Google Account   details, configuration settings, user data and installed applications.
  A flashlight-style application is included, working on   supported devices with a camera flash.
  User-customizable priorities for application   notifications.
 |  Ability to join Wi-Fi networks and control paired   Bluetooth devices from quick settings
  Support for multiple SIM cards
  Device protection: if a device is lost or stolen it will   remain locked until the owner signs into their Google account, even if the   device is reset to factory settings.
  High-definition voice calls, available between compatible   devices running Android 5.1
  Improvements   to the notification priority system, to more closely replicate the silent   mode that was removed in Android5.0.
 |  Gesture control and Wi-Fi support for Android   Wear
 | 
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Google, Android 5.0 lollipop, Dell, 2 GB of RAM, US, China, Android 5.1 Lollipop Updates, Android 5.1.1 Lollipop update, Android Wear, Android 5.0 Lollipop Features, Android 5.1 Lollipop Features, Android 5.1.1 Lollipop features, Technology, Consumer electronics
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