NOTE: This build was found to contain a critical bug, so we released a slight tweak to the build a couple of hours later, called "Android Studio 2.0 Preview 3B" instead. Please use that build instead:
December 10th, 2015: For information on what's new in 2.0 Preview 3, see the release announcement. For additional information about Android Studio, see the main developer site.
The release is available in the stable channel, so you can check for updates via Help > Check for Update... (on OSX, look in the Android Studio menu). This will download and install a patch rather than download a full IDE image.
Windows: https://dl.google.com/dl/android/studio/ide-zips/220.127.116.11/android-studio-ide-143.2469411-windows.zip (320 MB)
Mac: https://dl.google.com/dl/android/studio/ide-zips/18.104.22.168/android-studio-ide-143.2469411-mac.zip (319 MB)
Linux: https://dl.google.com/dl/android/studio/ide-zips/22.214.171.124/android-studio-ide-143.2469411-linux.zip (318 MB)