The list of changes and improvements include:
- Multimedia Links: Instead of using embed codes or shortcodes, WordPress developers are working to permit multimedia link embeds into posts and Pages. Just get the address of the YouTube, Flickr, DailyMotion, Blip, Photobucket, SmugMug, Viddler, Vimeo, and many others and they will appear as the multimedia content. Work has been going on with this for several versions, but this is a big push to improve the system.
- Media Library Grid View: Work on improving the Media Library and media management system in WordPress continues with the addition of a grid view in addition to the existing list view, and image and image information previews.
- TinyMCE/Toolbar: The Toolbar for the Visual Editor in WordPress, called TinyMCE, has improvements for lists and other features, and the color picker was added back in.
WordPress 4.0 is expected next month in August.
Remember, this is a beta release and not for the light of heart.