Version 3.0

情報募集中： WordPress 3.0 の新機能や変更点についての解説を書いたり見つけたら、外部資料にリンクを追加しましょう！ 該当部分を編集するか、このページのノートまたはフォーラム等で教えてください。

このページ「Version 3.0」は未翻訳です。和訳や日本語情報を加筆してくださる協力者を求めています。

• 原文はコメントアウトで残してください。更新が激しいページなので、日本語だけだと挿入位置が分かりにくいため。

現在、バージョン3.0はベータ版公開段階にあり、正式版の公開は2010年5月を予定しています。機能強化と修正の多くが下記一覧に載っていますが、最終公開までに変更となる可能性があります。

• 開発スケジュール
• 開いているチケット（Open Tickets）を表示 -- 協力者募集中（参照：WordPress への協力、開発ブログ）
  • Needs patch （パッチを書いてください）
  • Has patch, needs testing （パッチ適用済み、テストしてください）
  • Needs wrangling（要議論）
• 閉じたチケット（Closed Tickets）を表示

ハイライト

• 新機能 ナビゲーションメニュー管理
• カスタム投稿種別（custom post types）機能の強化 (try the Custom Post Type UI plugin to see the possibilities)
• 階層（カテゴリー形式）対応を含むカスタムタクソノミー（custom taxonomies）機能の強化 (again, try the Custom Post Type UI plugin to see the possibilities)
• 新デフォルトテーマ「Twenty Ten」がWordPress配布パッケージ唯一のテーマとなり、and is now designated the 'fallback' theme （デモサイト）
• Improved child theme support; child theme use is highly encouraged and as described in the Child Themes article, very simple to accomplish
• The Default (Kubrick), and Classic themes, are no longer included in the WordPress distribution, but are available in the Theme repository
• Bulk theme update ability
• スタンドアロンのWordPressと WordPress MUのコードを統合（注：本バージョンでは、ドメイン関連の追加機能はプラグインによる対応とした）
• Configure a Network (multisite/WPMU) using wp-config.php file

新機能

ユーザ向け機能

全般

• Check required php and mysql versions in the update and notify if the server environment does not meet those requirements
• New wp_login_form()/en 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
• Revised administration menu icons
• Revised information in readme.html file
• Show login form upon email-sent for recover/reset passwords

ダッシュボード

• 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

投稿

• Allow Tab indenting, Shift-Tab (outdenting), and multi-line tabbing, in plugin/theme editors
• Enable custom taxonomy UI for pages as well as for posts
• Improved revision comparison user interface

メディア

• 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)

リンク

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

コメント

• 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

外観

• 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 the Tag Cloud Widget to support non-tag taxonomies
• Allow theme background customization via new Background option under Appearances Menu (#12186)
• Author specific templates author-{nicename}.php and author-{id}.php (#12064)
• New template files single-{post_type}.php for custom post types (#12105)
• Style tweaks to theme editor
• Tab interface for Manage Themes and Install Themes in Appearance->Themes panel

プラグイン

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

ツール

• Import WordPress fixes
• 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
• Importer fixes regarding notices, attachments, and users

ユーザー

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

設定

• 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

インストール処理

• 新規インストール時にユーザー名とパスワードを選べるようにする。従来は 'admin'
• Show "Log In" button on install.php when "Already Installed"
• Automatic generation of Security Keys during installation
• Validate table_prefix in wp-config.php generator
• Standardize information in wp-config-sample.php

マルチサイト

• New Tools->Network panel to 'install' mulitsite/network ability, and is available only if WP_ALLOW_MULTISITE is defined in wp-config.php
• New Super Admin menu with Admin, Sites, Users, Themes, Options, Update, sub-menus (available only if is_multisite()/en && is_super_admin()/en )
• New Dashboard->My Sites panel
• New Tools->Delete Site panel

開発・テーマ・プラグイン

• A better default excerpt; remove multiple white spaces from the excerpt as well as splitting safely on UTF8 strings
• Add Child theme support for theme header registrations, second call to register_theme_headers()/en should add more headers, and not replace existing headers.
• Add add_plugins_page()/en function to allow adding a submenu to under Plugins menu
• Add get_search_link()/en with Permastruct (/search/) support, update get_search_link()/en, get_search_feed_link()/en and get_search_comments_feed_link()/en
• Add is_comment_feed()/en
• Add a wp_loaded action that fires once WordPress init has finished
• Add an INDEX on comment_parent (wp_comments table) to speed up wp_delete_comment() and reparenting queries
• Add custom hierarchical post type support to get_pages()/en
• Add defaults for 'post_content' and 'post_title' in wp_insert_post()/en
• Add email and login duplicate checking to wp_insert_user()/en
• Add extra hooks to "Right Now" dashboard widget
• Add filter to the links in paginate_links() and to the arguments in wp_link_pages()
• Add flag to taxonomy registration allowing permalinks to be prepended with front, or not
• Add id argument to wp_dropdown_users() and wp_dropdown_categories()
• Add initial WP_DEBUG define to wp-config-sample.php and suggest plugin/theme developers use it
• Add mobile webkit styles for twentyten theme
• Add more orderby and select options to get_comments/en
• Add Multisite capabilities (#11644)
• Add optional comment ID argument to comment template functions
• Add post type parameter to get_page_by_title()/en
• Add redirect_to and associated filters to registration and password recovery
• Add replace method to $wpdb (#10864)
• Add support to get_terms()/en to allow 'include' & 'exclude' args to be arrays()
• Add taxonomies argument to register_post_type()/en
• Add taxonomy capabilities
• Add the generator element in feeds through the {rss2|atom|rdf|rss|opml}_head hooks
• Add 'themes_loaded' hook to run after parent/child themes have been included
• Add WP_FALLBACK_THEME to make 'default' theme fallback transition smoother
• カスタム投稿種別（custom post types）の管理画面対応 (#9674)
• タクソノミー階層の管理画面対応 (#10122)
• Allow custom post types to have custom icons
• Allow enabling/disabling title and editor per post type, introduce remove_post_type_support()/en, add enable/disable for author override
• Allow methods to be used as a callback in wp_unique_filename()/en
• Allow more special characters in wp_generate_password()/en
• Allow multiple To: recipients in wp_mail()/en and improve handling of \r\n in headers and multiple CC/BCC headers
• Allow people to attach PHP 5.3 Closures to filters and actions
• Allow plugins to modify the query run by WP_User_Search
• Allow themes to specify a menu fallback other than wp_page_menu()
• Better inline documentation for WP_DEBUG, WP_DEBUG_DISPLAY, and WP_DEBUG_LOG.
• Better POST_BY_EMAIL logic
• Check PHP and MySQL versions in upgrade.php
• Convert Terms page to use WP_Ajax_Response(), hierarchical terms will now appear under their parent OR have the parents prefixed (Changeset 13086)
• Create metaboxes for hierarchical taxonomies
• Create post_status=auto-draft when creating a new post item and status changes to draft on first auto-save
• Customizable death (wp_die()/en is now pluggable) (#11892)
• Deprecate get_alloptions()/en
• Deprecate get_profile()/en for get_the_author_meta()
• Deprecate trackback_rdf() (#11139)
• Deprecate add_option_update_handler() and remove_option_update_handler() in favor of register_setting()/en and unregister_setting()/en
• Deprecate automatic_feed_links() in favor of add_theme_support/en('automatic-feed-links')
• Deprecate magpie
• Deprecate Snoopy
• Deprecate user levels
• Don't check for the existence of index.php in the htaccess rewrite rules
• Don't query against entire users table in wp_dropdown_users()
• Don't require a default category for post types other than 'post'
• Ensure that for multiple sidebar additions, the ID is unique
• Extend the_modified_date() to support before/after/echo
• Fallback to wp_page_menu() from wp_nav_menu() if no menus are setup
• Fix Press This entity encoding
• Fix DST/Standard transition display in Settings->General
• Fix recursive chmod for WP_Filesystem
• Flag post statuses as public, private, protected, or internal
• Functon get_usernumposts()/en is now deprecated in favor of count_user_posts()/en for naming consistency
• Improve user listing performance
• In Twenty Ten theme, don't use post thumbnail as the custom header if it's smaller than the header size
• Introduce *_user_meta() functions, deprecate *_usermeta() family
• Introduce add_permastruct()/en and flush_rewrite_rules()/en, wrappers for the corresponding WP_Rewrite methods
• Introduce delete_user_option()/en
• Introduce get_available_languages()/en
• Introduce get_comment_id_fields()/en to get comment_id_fields() and introduce a filter on the output to add extra fields
• Introduce get_index_template()/en to allow child themes to override a parent theme's index.php
• Introduce get_intermediate_image_sizes()/en for getting all the intermediate image sizes to be used both when adding attachements and deleting
• Introduce get_post_types()/en function to get a list of registered post types
• 登録済みタクソノミーをすべて取得する get_taxonomies()/en 関数を導入 (#12516)
• get_taxonomies()/en を導入
• （ヘッダ・サイドバー・フッタ以外の）一般的なファイルをインクルードするための get_template_part/en 関数を導入 (#13146, #13816)
• Introduce get_the_date()/en
• Introduce home_url()/en
• Introduce is_post_type_hierarchical()/en
• Introduce is_super_admin()/en
• Introduce is_textdomain_loaded()/en
• Introduce remove_theme_support()/en
• Introduce sanitize_key()/en
• Introduce set_current_screen()/en. Set current screen for inline edit ajax requests so post rows can be properly displayed.
• Introduce unload_textdomain()/en and add plugin_locale and theme_locale filters to load_*_textdomain() functions
• Introduce unregister_theme_headers()/en
• Introduce update_blog_details()/en
• the_shortlink() テンプレートタグの導入 (#10640)
• Introduce get_the_author_link()/en
• Introduce add_editor_style() to easily register a stylesheet for the visual editor
• Introduce Custom Taxonomies translation strings
• Introduce DISALLOW_FILE_EDIT flag for enabling/disabling the theme and plugin editors
• Introduce the disabled()/en form helper, move selected()/en and checked()/en out of wp-admin and into full scope
• Introduce WP_DEFAULT_THEME
• Introduce WP_User::for_blog() and current_user_can_for_blog() to avoid calls to WP_User::_init_caps()
• Introduce wpdb::tables() to fetch table names on a global or blog scope
• Introduce ZipArchive version of unzip_file()/en (more efficient on memory usage for supporting hosts)
• Make get_bloginfo('wpurl') use site_url()/en, not get_option('siteurl')/en
• Make better use of $wp_query->get_queried_object()
• Make calendar valid HTML 5
• Merge clear_global_post_cache()/en into clean_post_cache()/en
• Merge Categories/Hierarchical taxonomies into edit-tags.php
• Merge edit-page-form.php into edit-form-advanced.php
• Merge edit-pages.php into edit.php
• Merge page.php into post.php
• Merge page-new.php into post-new.php
• More powerful version of is_tax()/en
• Move send_nosniff_header()/en into wp-includes so it can be used in wp-ajax.php
• New $required_mysql_version global in wp-db.php
• New comment_form()/en that outputs a complete commenting form for use within a template
• New posts_search filter in query.php
• Numerous functions deprecated and changes to not use those deprecated functions
• Optimize single_post_title(), single_tag_title() & single_cat_title() to use WP_Query globals if available
• Pass default post to default_content, default_title, and default_excerpt filters, to allow filtering by post_type and other attributes
• Prevent page(\d+) slugs, and force a suffix
• Redirect ?page_id=xx for the Posts page to the posts page
• Remove STYLE_DEBUG constant, SCRIPT_DEBUG now handles both scripts and CSS
• Remove wp-ajax.php. admin-ajax.php can be used (and is better for) for front-end/nopriv AJAX requests
• Rename get_post_link()/en to get_post_permalink()/en to avoid conflict with bbPress/en
• Rename the new 'themes_loaded' hook to 'after_setup_theme' to prevent confusion as to what it actually does & where its fired from
• Revised Coding Standards: no camelcase variables, use lowercase for variables
• Serve a real 404 for ?p=does-not-exist, ?cat=does-not-exist, etc
• Show custom hierarchical taxonomies in the menus
• Show theme installer only to super admins
• comment_form()/en を使った標準コメントフォーム (#10910)
• Suffix and version bump for ie.css
• 設定APIが add_settings_error()/en 関数の検証失敗に伴う自動的なエラー表示に対応 (#11474)
• Tidy up logic for defining WP_DEBUG
• Update wp_popular_terms_checklist()/en to handle custom taxonomies
• Update wp_list_categories() to be custom taxonomy aware
• jQuery 1.4.2 へ更新 (#12305)
• jQuery UI 1.7.2 へ更新
• json lib を更新
• phpass 0.2 へ更新
• Prototype.js 1.6.1 へ更新
• Scriptaculous.js 1.8.3 へ更新
• SWFobject JS 2.2 へ更新
• Update wp_clear_scheduled_hook calls to use array when passing args
• Use admin_url()/en for images in wp-admin, to allow for filtering
• Use get_terms()/en in wp_count_terms()/en
• Various phpDoc/en updates
• Various changes to wp-includes/http.php

今後のバージョンに先送りとなった機能

次の機能は今回のバージョンには入らず、将来のバージョンに盛り込む見込みです。

• ユーザー権限の見直し・整備
• メディアアップロード機能改善

外部資料

• WordPress 3.0 (まだリリースされてないよ) の新機能 （わーどぷれすっ！）
• WordPress 3.0 の新機能を見てみよう @ WordBench 川崎 （Odysseygate.com）
• WordPress 3.0 リンク集 （power source*）

• ドキュメント更新対象・内容・進捗（裏Codex）

このページ「Version 3.0」はまだ書きかけで、情報が不足しています。続きを書いて WordPress を手助けしましょう.

最新英語版： WordPress Codex » Version 3.0 （最新版との差分）