The new WordPress version 3.3 has now been released. You should update your site as soon as possible since the new version includes a lot of  great improvements.

WordPress 3.3. media uploader

One of the nicest updates is the new drag and drop media uploader. Other updates are:

• hover menus for the navigation (fly-out)
• new toolbar
• improved co-editing support
• Tumblr importer
• pointer tips for new features included in each update
• friendly welcome message for first-time users
• improved dashboard experience on iPad and other tablets

You can read more about the new features and updates and watch the release video at the WordPress development blog.