Qt 6.0 is the first release of the new major version. Areas of improvement:

• Leveraging C++17
• Next-generation QML
• New graphics architecture
• Unified 2D and 3D for Qt Quick
• CMake build system

»This point release mainly adds corrections for security issues, along with a few adjustments for serious problems.«

• Feature: the -e switch.
• Feature: the same source files can now be specified in different modules while building addon modules.
• Bugfix: SSL shutdown did not work when lingering close was used.
• Bugfix: "upstream sent frame for closed stream" errors might occur when working with gRPC backends.
• Bugfix: in request body filters internal API.

Mutt gets a new major release number, not because of the number of new features but because some changes break the backward-compatibility.

Buildah 1.17 adds several new options to the manifest add command, returns the name instead of id with the mount command, and improves Podman interoperability.

This release of HAProxy comes with many improvements; its changes in the connection layer lays the foundation for support for HTTP/3 / QUIC.

This new version of sudo comes with improvements to how the sudoers file is handled. Zero-length files are not saved by sudoedit, error messages are more accurate now, and sudo refuses to run if there is a syntax error.