Google unveiled Android 4.0—codenamed Ice Cream Sandwich (ICS)—this week at an event in Hong Kong, alongside the new Galaxy Nexus smartphone. The much-anticipated new version of Google's mobile operating system includes a unified interface for phones and tablets and a number of significant new technical features, such as face detection.
Shortly after the launch event, Google made the ICS software development kit (SDK) available for the public to download from the Android developer website. The SDK makes it possible for third-party software developers to start building software that is designed for the new version of the operating system. The SDK and the updated developer reference documentation offers a first look at the new APIs introduced in ICS.