WordPress 4.6 Beta 4 发布了，包括以下修复： Media: alt attributes are now always added to images inserted from URLs (#36735). Object subtype handling has been removed from register_meta(). Details about this change are explained in a post for developers. Resource hints are now limited to enqueued assets (#37385). A regression with query alterations introduced by the new WP_Term_Query has been fixed (#37378). The Ajax searches for installed and new plugins have been enhanced to fix several accessibility issues and to improve compatibility with older browsers. (#37233, #37373) The media player MediaElement.js has been updated to 2.22.0 to fix YouTube video embeds (#37363). The Import screen was overhauled, improving accessibility and making it much easier to install and run an importer (#35191). Emoji support has been updated to include all of the latest Unicode 9 emoji characters (#37361). Various bug fixes. We’ve made more than 60 changes during the last week. 详情：https://wordpress.org/news/2016/07/wordpress-4-6-beta-4/ WordPress 4.6 Beta 4 发布下载地址
