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Commercial LTS Qt 5.15.6 Released

We have released Qt 5.15.6 LTS for commercial license holders today. As a patch release, Qt 5.15.6 does not add any new functionality but provides bug fixes and other improvements.

You can add Qt 5.15.6 in 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.

Fixed Bugs and Important Changes

As always with our long-term supported releases, we have been targeting to include all the important bug fixes to the extent feasible. Looking back to the Qt 5.15.0 release the now released Qt 5.15.6 contains over 1170 bug fixes as well as numerous smaller improvements in the functionality - as well as multiple important security fixes. These bug fixes are also included in Qt 6.x releases and we recommend all active development projects to migrate either to the latest Qt 5.15.6 patch release or to Qt 6.

The list of fixes and the overview of all important changes in Qt 5.15.6 can be found from the release note. It is available via Qt Account: in Downloads, select Product: Qt and Version: 5.15.6.

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 5.15.6 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 5.15.6 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 commercial-only LTS patch release Qt 5.15.7 will be released in October 2021.

 


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