As you know Moodle’s major releases now are every six months and progress on new features, enhancements and overhauls has been excellent since the new schedule was instituted. A tweak to the calendar now puts minor releases on a schedule with a more frequent regularity.
We have decided to change the Release calendar to bring minor releases in-line with major releases, rather than keeping them offset by one month, which will achieve tighter security still.
Minor releases are now every two months (starting after a major release). Read the full announcement here: https://moodle.org/mod/forum/discuss.php?d=221650. With a growing number of partners and community contributors this is one additional step to coordinate development efforts and schedules.