WordPress 3.4 will be out any time now and brings some significant changes including some tweaks to WP_Query to make things run faster behind the scenes, and a new theme customizer. Take a look at this video from the folks over at WP101, who produce a nice line of WordPress Tutorial Videos
For Developers
Nacin’s WordPress 3.4 field guide for developers
Chip Bennett explains the new themes API
Embedded Tweets
You can now directly embed tweets by just adding the url of the tweet directly into the WordPress post editor.
WordPress 3.4 is here! Update your site now to try the new theme customizer, better headers, HTML captions & more: wp.me/pZhYe-BE
— WordPress(@WordPress) June 13, 2012