In early February, the Drupal community has released the latest version of Drupal 6.x and Drupal 7.x, Drupal 6.24 and Drupal 7.12.
This time, there are two versions of each version of Drupal 6.x and Drupal 7.x. For Drupal 6.x, version 6.23 intended to improve the security and 6.24 version is to fix bugs, likewise with Drupal 7.x, version 7.11 is for security fixes and version 7.12 is for bugs fixes.
For more information about this release, read the release note here. Download Drupal 6.24 and Drupal 7.12.