WordPress is a free and open source blogging tool and a dynamic content management system (CMS) based on PHP and MySQL.
It has many features including a plug-in architecture and a template system. WordPress is used by over 14.7% of Alexa Internet’s “top 1 million” websites and as of August 2011 manages 22% of all new websites. WordPress is currently the most popular CMS in use on the Internet.
“If you’ve been testing Beta 1, please update to Beta 2 to make sure things are still working for you. If you are a theme or plugin author and have not yet started testing your code against the 3.4 beta, now’s the perfect time to start,” WordPress encouraged.
WordPress 3.4 comes with a solid list of new features, a stand-out one being the ability to customize themes on the fly via an editor, enabling users to change color themes and make adjustments without actually writing any CSS.
Other new features include flexible custom header size, custom header and background images selectable from the Media Library and other theme-related improvements.