Almost a month after the previous 6.20 release, KDE announced the launch of Frameworks 6.21, expanding its collection of add-on libraries to Qt and enhancing functionality available to developers across various platforms.

The update spans dozens of libraries that form the technical foundation of KDE software, including file handling, UI components, internationalization, build tooling, and system integration.

One of the most visible areas of change is KIO, which receives a long list of fixes and behavioral improvements. These include refinements to file previews, safer handling of systemd environment variables, improved rename dialogs, better progress reporting during file operations, and multiple crash and edge-case fixes. Several long-standing bugs related to trash handling, file links, and mount point resolution are also addressed.