WordPress 4.0 “Benny” has just been released, and promises to be an exciting update with tons of new features and improvements.
Version 4.0 of WordPress, named “Benny” in honor of jazz clarinetist and bandleader Benny Goodman, is available for download or update in your WordPress dashboard. While 4.0 is just another number for us after 3.9 and before 4.1, we feel we’ve put a little extra polish into it. This release brings you a smoother writing and management experience we think you’ll enjoy. WordPress Blog
More information about WordPress 4.0: http://wordpress.org/news/2014/09/benny/