Andrew Nacin writes WordPress 3.0 Thelonious passed 3 million downloads yesterday on the WordPress Dev Blog and that today the plugin directory passed 100 million downloads.
Future plans announced, include:
Improving WordPress.org
Improving the infrastructure of the plugins directory
Better integration with the forums so you can support your users
SVN notifications and improvements to the bug tracker
Full article at: http://wordpress.org/development/2010/07/100-million/