There are some goodies and instructions how to go about using them at Android Developers site. With the ADT plugin, one can easily setup Eclipse to manage all the Android Projects.
ADT plugin in revision 9.0 (January 2011) now and you need have SDK Tools R9 installed in order to run /use it.
This release brings many improvements to the Visual Layout Editor but;
seem to be my favorites as we are traveling in the direction of Honeycomb now. For
There are many bug fixes as well and according to the information, even Windows users could be smiling, "The SDK manager is more reliable on Windows" :)
There is good documentation on installing / updating the ADT Plugin on the Android Developer site. Follow the link below for a direct jump.
There is blog post on the Android Developer bloger as well, Android 3.0 Platform Review And Updated SDK Tools.