But for how much longer will new versions be released? Since they own all copyrights to the software, it's relatively easy to drop LGPL at any point on newer releases.
Sure, if they don’t mind Qt automatically being relicensing under BSD
“The little known KDE Free Qt Foundation makes sure that Qt stays free and open-source. It guarantees that all Qt modules currently licensed under LGPLv3 must continue to be available under LGPLv3 in the future. This covers all modules from Qt Essentials and many add-on modules. If The Qt Company discontinued the FOSS version of Qt, the Foundation would have the right to make Qt available under the BSD license. This is a very powerful protection of free and open-source Qt.“