Funny for a company to ship a new mobile phone SDK before releasing the phone, instead of announcing one months after the device hits stores and generates thousands of complaints about its lack of third party expansion. Hey, different companies do things differently, I guess.
The Android platform is a
software stack for mobile devices including an operating system, middleware
and key applications. Developers can create applications for the platform
using the Android SDK. Applications are written using the Java programming
language and run on Dalvik, a custom virtual machine designed for
embedded use which runs on top of a Linux kernel.
If you want to know how to develop applications for Android, you're in the
right place. This site provides a variety of documentation that will help you
learn about Android and develop mobile applications for the platform.
An early look at the the Android SDK is also
available. It includes sample
projects with source code, development tools, an emulator, and of course all
the libraries you'll need to build an Android application.