InspIRCd v3.13.0 is now available, download it from the releases page.
The most notable changes in this release are:
Added <override:timeout> to allow automatically removing user mode O (override) after a defined time period.
Changed specifying a DH parameter file in the ssl_gnutls module to be optional on GnuTLS 3.6.
Changed specifying a DH parameter file in the ssl_openssl module to be optional on OpenSSL 3.0.
Fixed building the NSIS installer on Windows.
Fixed not parsing the constraint field properly for multi-constraint /LIST requests.
Fixed the o field in /WHO returning InspIRCd prefix ranks instead of WHOX op levels.
Fixed the privdeaf module overriding other private message checks.
No breaking configuration changes have been made since the v3.0.0 release but if you are upgrading from v2 please consult our list of config changes in v3.
The full change log can be found on the docs site or on GitHub.