While we’ve been using their software ever since the start of this publication, WordPress has been naming all their major releases after musicians. So WordPress 3.4 “Green” is no exception, named after Blue Note musician Grant Green. The update adds the ability to see live previews when editing your site’s theme, easily update header images, embed tweets into posts, and improve image captions by allowing HTML. The APIs now take advantage of the new theme customization features as well as additional new developer tools for custom content types and taxonomies — the usual affair. But now that you know what WordPress has done to their web app, check out their jazz-filled video after the break, explaining it the way they would want WordPress 3.4 to be explained.