The first public beta of WordPress Version 2.7 was announced late yesterday.
For those that want to get a headstart and help test the latest version of WordPress (probably not a good idea to do with your public or main blog yet), the download is available from the WordPress Blog here.
Currently 'tuned' for best viewing in Firefox and Safari, the team is still working out some 'viewing glitches' in other browsers (including some versions on Internet Explorer).
The final version of Wordpress 2.7 was expected to be released on November 10th but has now been delayed to fix any 'high-impact' bugs. The WordPress team is targeting the end-of-November.
The current stable version of WordPress is 2.6.3.