Here is the list of newly added features. Whats your take guys?http://wordpress.org/news/2014/03/wordpress-3-9-beta-1/
Oh, no! I wish the interface is not changed very much ( Considering documentations upgrade )
Some cool new features.
For devs who use default wp resizing functionality, you will be happy to know specifying cropping position is now supported.
Very cool, glad to see even more features coming to the Live Customizer / Customisation API