While Android Studio will normally let you know when you need to update something, you can also manage updates to the SDK manually via the manager. You’ll find this in Android Studio if you ...

Click "Download Packages" at the bottom of the window. Close the SDK Manager when the download finishes. Double-click "Android AVD Manager," which allows you to create a new Android virtual device.

Check the Android SDK Manager on this morning and you'll spot packages for a new API level: Android P. There are packages for the SDK itself, plus Android TV, Google APIs, and Google Play variants ...

Developers can download the Android 4.2 platform from the Android SDK Manager. Google also has an overview of what’s new on its website and an API overview here.

But Google is already moving on past the latest 5.1 release, as evidenced by the appearance of Android 5.1.1 (API 22) in the Android SDK Manager.

You can take a look at an image of Android 5.1.1 listed in the SDK Manager and I’m sure developers out there will no doubt have already seen it appear in their workflow.

Get the emulator system images through the SDK Manager or download the Nexus device system images. Recompile your apps against Android 5.0 SDK, especially if you used any preview APIs.

After installing it via the Android SDK Manager, I was able to set up a bootable ICS environment in the Android Virtual Device Manager (AVD). It started up in the emulator and ran as expected.