Drupal 7.9, a maintenance release with numerous bug fixes (no security fixes) is now available for download. Several critical bugs with the OpenID have been addressed in this release, among other critical and major bugs, and a few new API features. See the Drupal 7.9 release notes for a full listing.
Upgrading your existing Drupal 7 sites is strongly recommended. There are no new features in these releases. For more information about the Drupal 7.x release series, consult the Drupal 7.0 release announcement.