WordPress 3.9 is due to be released in mid-April.
Topher, our WordPress teacher, is here to give you your video introduction to 3.9.
In the content creation screen there's a new version of TinyMCE and also some gallery improvements. Topher also highlights some audio and video improvements.
3.9 also has a series of improvements to help WordPress users discover and preview themes. Topher blows his own trumpet at this point ... he helped code some of these new features!