WordPress 3.4.2 was released yesterday, and it contains important security updates to keep your site safe.
Our WordPress one-click installer automatically installs the latest version for new sites. If you’ve previously installed WordPress, you should upgrade it right away from within your WordPress Dashboard.
In fact, you should always update immediately when WordPress tells you there’s a new version available. Don’t let yourself get behind, because it gets more difficult to update smoothly if you’re several versions out-of-date.