Update: Drupal 7.23 is now available.
Drupal 7.22, a maintenance release with numerous bug fixes (no security fixes) is now available for download. See the Drupal 7.22 release notes for a full listing.
Upgrading your existing Drupal 7 sites is recommended. There are no major new features in this release. For more information about the Drupal 7.x release series, consult the Drupal 7.0 release announcement.
Drupal 7.22 is a bug fix only release. The full list of changes between the 7.21 and 7.22 releases can be found by reading the 7.22 release notes. A complete list of all bug fixes in the stable 7.x branch can be found in the git commit log.
See the 7.22 release notes for details on important changes in this release.
patch to fix the problem is available in the above issue, and it has been committed to the 7.x development version so it will be included in the next bug fix release.: Sites running on 1.x versions of the Apache web server may experience errors after updating to Drupal 7.22. (Although Apache 1.x was deprecated by the Apache project several years ago and switching to Apache 2.x is highly recommended, Drupal 7 normally does still run on it.) A