According to the development team, the first release candidate of WordPress 3.0 can be downloaded from the official site.
Some information about the release:
User menus are finally finished. Hooray!
Multisite function finished
The appearance of the control panel is a little lightweight, so as not to distract attention from the content.
A large number of changes have been made, therefore authors of plug-ins and themes are encouraged to test their performance, and in case of any compatibility problems, inform the developers. ')
The release of WordPress 3.0 is scheduled for mid-June, there is no exact date yet.