The Android 1.6 SDK is now available for download. Android 1.6, which is based on the donut branch of Android and introduces new features and technologies.

The SDK supports CDMA and additional screen sizes for deployment on even more mobile networks and devices.

New technologies include framework-level support for additional screen resolutions, like QVGA and WVGA, new telephony APIs to support CDMA, gesture APIs, a text-to-speech engine, and the ability to integrate with Quick Search Box.

The Android 1.6 SDK requires a new version of Android Development Tools (ADT). The SDK also includes a new tool that enables you to download updates and additional components, such as new add-ons or platforms.

Smartphones will run Android 1.6 as early as October. Applications written for older versions of Android will continue to run on devices with Android 1.6.