CiviCRM version 5.42.0 is now out and ready to download. This is a regular monthly release.
Upgrade now for the most stable CiviCRM experience: https://civicrm.org/download
Users of the CiviCRM Extended Security Releases (ESR) do not need to upgrade, as there are no ESR-specific bug-fixes or security issues at the moment. The current version of ESR is CiviCRM 5.39.x.