Right now, this blog is running on WordPress 3.8.1. It is a go platform for blogging. Just noticed that WordPress 3.9 will be released next month. The Beta 1 is available for testing.
I checked the list of new features and improvement. There are something interesting.
1) TinyMCE updated to latest version.
2) Widget management to live previews.
3) Images can be drag-n-drop directly onto the editor to upload.
4) Image crop or rotate is available.
5) Audio/video playlists. It is kind a new feature, have to take a close look.
You can download the beta here (zip).