WordPress 2.8.1 was released on July 9th, 2009 and is a bug fix & security release.
WordPress 2.8.1 fixes many bugs and tightens security for plugin administration pages. Core Security Technologies notified us that admin pages added by certain plugins could be viewed by unprivileged users, resulting in information being leaked. Not all plugins are vulnerable to this problem, but we advise upgrading to 2.8.1 to be safe.
Schedule your WordPress upgrade today via our WordSprung WordPress Upgrade Service.