We have released Qt 5.15.9 LTS for commercial license holders today. As a patch release, Qt 5.15.9 provides important bug fixes and security updates. One highly requested improvement is support for macOS on ARM and universal builds.
Fixed Bugs and Important Changes
Compared to Qt 5.15.8, Qt 5.15.9 contains about 160 bug fixes and security updates. The list of fixes and the overview of all important changes in Qt 5.15.9 can be found in the release note. It is available via Qt Account: in Downloads, select Product: Qt and Version: 5.15.9.
Qt 5.15.9 provides support for macOS on ARM, including prebuilt binaries for both single architecture and universal builds. Build system support for universal builds is limited to the qmake build system. See the Qt for macOS documentation for details on how to enable universal builds for your application.
Get Qt 5.15.9
Holders of valid commercial license can add Qt 5.15.9 to the existing online installation by using the maintenance tool or do a clean installation by using the Qt Online Installer. Offline installers are available in the Qt Account download area.
Accessing Sources
If you want to access the source code repository, it can be done via the Codereview system. Just log in with a Qt Account that has a valid commercial license, and you will be able to access the LTS repositories. For more details, please check the instructions for accessing the commercial LTS repositories.
Building with Yocto
Qt for Device Creation images are also available for Qt 5.15.9 LTS. If you want to build yourself with Yocto, set up Gerrit and use the meta-qt5 layer from the Qt repository. We have updated the Yocto meta-qt5 layer of Qt 5.15.9 to point to the commercial LTS repositories. For more details, please check the instructions on using yocto with access to the commercial LTS repositories.
Support
If you have any problems with the commercial LTS releases, please contact Qt Support. You can also create bugs to https://bugreports.qt.io, but in addition, it is recommended to notify the support team about it.
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The next patch release, Qt 5.15.10, is planned to be released at the end of May 2022.
