Mozilla announces the release of the first version of the Mozilla Firefox 2 Beta:

Today, we’re making availble for testing the BonEcho Alpha 1 milestone. This developer build is the first of many developer milestones on the path to Firefox 2. (LINK)

And the features of it are:

Features included in the alpha 1 release include the Places dialog, which makes it easier to find and return to previously visited pages based on their content rather than their address, and a system for remotely disabling third-party extensions to the browser. These extensions can be installed by users to add functionality or change the behaviour of the browser, but may cause it to crash or pose a security risk. Firefox 2 will consult a list of extensions on a central server and refuse to load those that the Mozilla developers consider unsafe.(LINK)

And the screenshots of it can be seen here.