WordPress version 4.0 is now available for download. This latest version of WordPress is full of user interface improvements that will make working with WordPress feel smoother and more refined. If you have not updated your site yet, be sure to create a backup, and then update so you can experience the improvements of 4.0

A few highlights:

• Improved media preview
• Embed videos, playlists by simply adding in a URL (list of all embeds supported)
• Improved editor for all screen sizes
• Improved plugin search and installer view
• Language chooser (on install)
• More powerful ORDER BY when using WP_QUERY

You can read more about the update: http://wordpress.org/news/2014/09/benny/

You can download WordPress 4.0: http://wordpress.org/wordpress-4.0.zip