This is a maintenance release:
All third-party software components (Apache HTTP server, OpenSSL, curl and other libraries) have been updated to their latest stable versions.
HTTPS monitors have been enhanced to support TLS 1.3 encryption protocol.
Improved accuracy of timing measurements in performance report for all monitor types: time resolution is now approx. 1 millisecond.
SNMP and DNS monitors have been enhanced: OCTET STRING values validation in SNMP and multiple strings to validate DNS response.
The detailed information can be found in release notes.