New release up – as always make sure you backup before applying
Highlights
- Easier Uploading
- File Type Detection – A single upload button.
- Drag-and-Drop Media Uploader
- Dashboard Design
- New Toolbar in the dashboard, combining the Admin Bar and admin header
- Responsive design for some screens, including iPad/tablet support
- Flyout menus, providing single-click access to any screen
- New User Experience
- New feature pointers, helping users navigate new features
- Post-update About screen
- Dashboard welcome area for new installs
- Content Tools
- Better co-editing that releases post locks immediately
- Tumblr Importer
- Don’t lose widgets when switching themes
- Under the Hood improvements
- Use the postname permalink structure without a performance penalty
- Improved Editor API
- is_main_query() function and WP_Query method
- Remove a number of funky characters from post slugs
- jQuery 1.7.1 and jQuery UI 1.8.16
- A new Screen API for adding help documentation and adapting to screen contexts
- Improved metadata API
- Performance improvements and hundreds of bug fixes