
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.
You can expect to see devices running Android 1.6 as early as October. As with previous platform updates, applications written for older versions of Android will continue to run on devices with Android 1.6. Please test your existing apps on the Android 1.6 SDK to make sure they run as expected.
Over the next several weeks, we will publish a series of blog posts to help you get ready for the new developer technologies in Android 1.6. The following topics, and more, will be covered: how to adapt your applications to support different screen sizes, integrating with Quick Search Box, building gestures into your apps, and using the text-to-speech engine.
VIA::http://android-developers.blogspot.com/