This might be a good news for the wordpress user that WordPress realease 3.0 beta 1 with various of news features. With this new version the wordpress and wordpress MU has merge together. The beta version will be available with the new default wordpress themes and custom post type functionality improvements. you can download the new beta version in the official wordpress page. I recommended not to use this beta version or your blog because many new features are still under development. however you can install it in your local computer and see the new features. if you want to use wordpress for free. you can start a free self hosted wordpress blog and learn the features of the wordpress.