User interface refinements

        * System-wide:
              o Refinement of all core UI elements
              o Animated window transitions (off by default)
              o Accelerometer-based application rotations
        * UI polish for:
              o In-call experience
              o Contacts, Call log, and Favorites
              o SMS & MMS
              o Browser
              o Gmail
              o Calendar
              o Email
              o Camera & Gallery
              o Application management

    Performance improvements

        * Faster Camera start-up and image capture
        * Much faster acquisition of GPS location (powered by SUPL AGPS)
        * Smoother page scrolling in Browser
        * Speedier GMail conversation list scrolling

    New features

        * On-screen soft keyboard
              o Works in both portrait and landscape orientation
              o Support for user installation of 3rd party keyboards
              o User dictionary for custom words
        * Home screen
              o Widgets
                    + Bundled home screen widgets include: analog clock, calendar, music player, picture frame, and search
              o Live folders
        * Camera & Gallery
              o Video recording
              o Video playback (MPEG-4 & 3GP formats)
        * Bluetooth
              o Stereo Bluetooth support (A2DP and AVCRP profiles)
              o Auto-pairing
              o Improved handsfree experience
        * Browser
              o Updated with latest Webkit browser & Squirrelfish Javascript engines
              o Copy ‘n paste in browser
              o Search within a page
              o User-selectable text-encoding
              o UI changes include:
                    + Unified Go and Search box
                    + Tabbed bookmarks/history/most-visited screen
        * Contacts
              o Shows user picture for Favorites
              o Specific date/time stamp for events in call log
              o One-touch access to a contact card from call log event
        * System
              o New Linux kernel (version 2.6.27)
              o SD card filesystem auto-checking and repair
              o SIM Application Toolkit 1.0
        * Google applications
              o View Google Talk friends’ status in Contacts, SMS, MMS, GMail, and Email applications
              o Batch actions such as archive, delete, and label on Gmail messages
              o Upload videos to Youtube
              o Upload photos on Picasa

    New APIs and developer tools

        * UI framework
              o Framework for easier background/UI thread interaction
              o New SlidingDrawer widget
              o Horizontal ScrollView widget
        * Home Screen framework
              o APIs for creating secure home screen widgets
              o APIs for populating live folders with custom content
        * Media framework
              o Raw audio recording and playback APIs
              o Interactive MIDI playback engine
              o Video recording APIs for developers (3GP format)
              o Video and photo sharing Intents
              o Media search Intent
        * Input Method framework
              o Text prediction engine
              o Ability to provide downloadable IMEs to users
        * Speech recognition framework
              o Support for using speech recognition libraries via Intent
        * Misc API additions
              o LocationManager - Applications can get location change updates via Intent
              o WebView - Touch start/end/move/cancel DOM event support
              o SensorManager - redesigned sensor APIs
              o GLSurfaceView - convenience framework for creating OpenGL applications
              o Broadcast Intent for app update install succeeded - for smoother app upgrade experience
        * Developer tools
              o Support for multiple versions of Android in a single SDK installation
              o Improved JUnit support in ADT
              o Easier application performance profiling