It was released on July 4th, the independence day of United States of America, Matt Mullenweg announced the release of the most anticipated WordPress 3.2 which was named after George Gershwin.
You can also check out the official release video of WordPress 3.2 Gershwin.
Matt describes it in the post:
Under the hood there have been a number of improvements, not the least of which is the streamlining enabled by our previously announced plan of retiring support for PHP4, older versions of MySQL, and legacy browsers like IE6, which allows us to take advantage of more features enabled by new technologies. The admin bar has a few more shortcuts to your most commonly-used actions. On the comment moderation screen, the new approve & reply feature speeds up your conversation management. You’ll notice in your first update after 3.2 that we’ll only be updating the files that have changed with each new release instead of every file in your WordPress installation, which makes updates significantly faster on all hosting platforms. There are also some fun new theme features shown off by Twenty Eleven, like the ability to have multiple rotating header images to highlight all of your favorite photos.
What are you waiting for? Upgrade Now!