It says: GNU General Public License version 2.0 or (at your option) version 3.0 or any later version approved by the KDE Free Qt Foundation.
This means that it's only gpl3+ if the KDE free qt foundation approve it.
It says: GNU General Public License version 2.0 or (at your option) version 3.0 or any later version approved by the KDE Free Qt Foundation.
This means that it's only gpl3+ if the KDE free qt foundation approve it.