5.5

• Removed information about plugins and themes that manage updates via PUC from data that WordPress core sends to api.wordpress.org when it checks for updates. Props to @DavidAnderson684 (#578).
  • You can turn this off and restore the default WP behaviour by using the new remove_from_default_update_checks filter. Example:

    $updateChecker->addFilter('remove_from_default_update_checks', '__return_false');

• Improved handling of incorrect ZIP directory structure where plugin/theme files are at the root instead of in a subdirectory. The update checker will now attempt to automatically create a new subdirectory that matches the slug and move all the files into that subdirectory. Props to @MehbubRashid (#574).
• Improved Debug Bar integration: The "Check Now" and "Request Info" buttons in the "PUC (your-slug)" panel are now also visible in the site front end. Previously, they only showed up if you opened the Debug Bar while on an admin page.
• Added Greek translation (@theo-gk).
• Updated Simplified Chinese translation (@seatonjiang).