We have released Qt 5.15.4 LTS for commercial license holders today. As a patch release, Qt 5.15.4 does not add any new functionality but provides bug fixes and other improvements.
Compared to Qt 5.15.3, Qt 5.15.4 contains about 100 bug fixes and security updates. The list of fixes and the overview of all important changes in Qt 5.15.4 can be found from the Qt 5.15.4 release note. It is available via Qt Account Downloads.
You can add Qt 5.15.4 in the existing online installation by using the maintenance tool or do a clean installation by using the Qt Online Installer.
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.
Qt for Device Creation images are also available for Qt 5.15.4 LTS. If you want to build yourself with yocto, use the meta-qt5 layer from the Qt repository. We have updated the yocto meta-qt5 layer of Qt 5.15.4 to point to the commercial LTS repositories. For more details, please check the instructions on using yocto with access to the commercial LTS repositories.
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.
The next commercial-only LTS patch release, Qt 5.15.5 is planned to be released in June and Qt 5.15.6 will be released in August.
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