New of wordpress version is released.  On June 17, 2010, WordPress Version 3.0, named for Thelonious, was released to the public. For more information on this enhancement and bug-fix release, read the WordPress Blog and see the Changelog for 3.0.

For Version 3.0, the database version (db_version in wp_options) changed to 15260, and the Trac revision was 15274.

New feature on WordPress 3 :

• WordPress and WordPress MU have merged, allowing the management of multiple sites (called Multisite) from one WordPress installation.
• New default theme “Twenty Ten” takes full advantage of the current features of WordPress.
• New custom menu management feature, allows creation of custom menus combining posts, pages, categories, tags, and links for use in theme menus or widgets.
• Custom header and background APIs.
• Contextual help text accessed under the Help tab of every screen in the WordPress administration.
• Ability to set the admin username and password during installation.
• Bulk updating of themes with an automatic maintenance mode during the process.
• Support for shortlinks.

• Check required php and mysql versions in the update and notify if the server environment does not meet those requirements
• New wp_login_form() provides a simple login form for use anywhere
• New WordPress logo for admin header
• Place “Search Engines Blocked” mini-alert in the wp-admin header to prevent people from accidentally delisting themselves
• Remove ‘Turbo’ link from admin header and remove Turbo section from the Tools->Tools panel
• Renamed various menu items, for example Posts->Edit becomes Posts->Posts, and Links->Edit becomes Links->Links, and so on
• Revised administration menu icons
• Revised Gray Admin Color Scheme
• Revised information in readme.html file
• Show login form upon email-sent for recover/reset passwords

Dashboard

• Add link so user can visit Dashboard after core upgrade
• Move Tools->Upgrade menu option to Dashboard->Updates and overhaul of user interface so themes, plugins, and core upgrades under one panel
• New menu management (navigation) via Menus option under Appearances Menu (#11817)
• Password nag for newly registered users
• Split Right Now widget into Content | Discussion

Posts

• Allow for removing all tags in quick edit
• Allow themes to style the visual editor with editor-style.css file, using add_editor_style() function
• Enable custom taxonomy UI for pages as well as for posts
• Improved revision comparison user interface
• Shortlinks enabled, but still requires a plugin or theme support to fully realize this feature
• Added capital_P_dangit() filter to change ‘WordPress‘ to ‘WordPress‘.

Media

• Add FunnyOrDie.com oEmbed support
• Allow Deletion of Media Alt text
• Change Media UI labels from “Post Thumbnails” to “Featured Image”
• Cleanup of the edit media screen
• Don’t let “Crunching” overlap image name while uploading
• Optimize scan for lost attachments
• Support for additional file type extensions (Changesets 12581 and 13349)

Links

• Order link categories by name, not count, on Add New/Edit Link page

Comments

• Add additional columns to the Posts Comments view
• Allow configuration of number of comments to display Recent Comments dashboard module
• Block comments for future posts and password protected posts (when password not provided)
• Change to comments UI to show when a comment is replying to another, and link to the parent comment

Appearance

• Add meta_value_num and meta_key ordering for WP_Query to allow natural numeric ordering of results
• Add filter to get_avatar() to allow avatars for custom comment types
• Allow Tab indenting, Shift-Tab (outdenting), and multi-line tabbing, in theme editor
• Allow the Tag Cloud Widget to support non-tag taxonomies
• Allow theme background customization via new Background panel under Appearance menu
• New template file, front-page.php, for the front page of a site
• New template file, single-{post_type}.php, for custom post types
• New template files, author-{nicename}.php, and author-{id}.php, for author specific templates
• New template files, taxonomy.php, taxonomy-{taxonomy}.php and taxonomy-{taxonomy}-{term}.php for custom taxonomies
• Style tweaks to theme editor
• Tab interface for Manage Themes and Install Themes in Appearance->Themes panel
• Improved child theme support; child theme use is highly encouraged and as described in the Child Themes article, very simple to accomplish
• New comment_form() that outputs a complete commenting form for use within a theme template
• The Default (Kubrick), and Classic themes, are no longer included in the WordPress distribution, but are available in the Theme repository.

Plugins

• Add Details and Install Now action links under each plugin listed in Install Plugins
• Allow Tab indenting, Shift-Tab (outdenting), and multi-line tabbing, in plugin editor
• Upgrade plugins in bulk from the Plugins->Installed panel (#11542)
• When deleting plugins, check for uninstall hooks, and warn of data deletion

Tools

• Add tag-to-category and category-to-tag converters to the Tools panel, add tag-to-category converter links to Posts->Post Tags panel
• Clean up OPML link export script
• Expanded filter criteria in Administration > Tools > Export panel
• Import WordPress fixes notices, attachments, and users
• Removed Turbo menu item, but because Turbo files weren’t removed, Turbo may still work
• All importers moved to the plugin repository (e.g. WordPress Importer)

Users

• Allow “No role for this blog” to be chosen in Users->Add New panel

Settings

• Removed Settings->Miscellaneous admin menu, moved uploads settings to Settings->Media panel
• Revise Settings->General panel, change “Blog” reference to “Site”
• Revise Gray Admin Color Scheme

• Improved Custom post types and custom taxonomies including hierarchical (category-style) support. (Try the Custom Post Type UI or GD Custom Posts And Taxonomies Tools plugins to see the possibilities.)
• A lighter admin color scheme to increase accessibility and put the focus more squarely on your content.

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