The monthly security release window for Drupal 8 and 7 core will take place on Wednesday, October 19.

Unless there is an unexpected security emergency, however, this window will not be used and there will be no Drupal 8 or 7 core releases on that date.

Drupal 8 site owners should note that the Drupal 8.1.x branch is no longer supported; sites running on an 8.1.x release should therefore update to the Drupal 8.2.x branch as soon as possible in preparation for any future security releases. (The most recent release on that branch is 8.2.1, as of the date of this post.)

Similarly, Drupal 7 site owners should update to the 7.51 release (the most recent Drupal 7 release as of this post), which includes the larger changes from Drupal 7.50 as well.

Other upcoming core release windows include:

• Wednesday, November 2 (patch release window)
• Wednesday, November 16 (security release window)

Drupal 6 is end-of-life and will not receive further releases.

For more information on Drupal core release windows, see the documentation on release timing and security releases, as well as the Drupal core release cycle overview.