WordPress 3.5, code name “Elvin”, is now available for download. This release of WordPress is mostly about improvements to the administrative interface of WordPress, most notably with the media section of things. The upload/management for media has gotten a serious and beautiful overhaul, so you’ll definitely want to check that out!
Visit WordPress.org/download to get your copy of WordPress 3.5. As always, backup your database and files when upgrading, since you never know when there might be a hiccup.