It's a bit more complicated than that. - The initial versions of LTS point releases (so e.g. something like a 5.15.0) are open source. The commercial-only begi

It's a bit more complicated than that. - The initial versions of LTS point releases (so e.g. something like a 5.15.0) are open source. The commercial-only begins a few point releases in, say with something like a 5.15.3. - Due to the KDE Free Qt Foundation agreement, also those initially commercial-only point releases do become open source eventually, at a max 12 month delay. This was indeed very controversial when it was done for the first time with Qt 5.15.*, since that is the last major version if Qt 5, which effectively meant no same-day open source maintenance releases for Qt 5 anymore after some point. Within the Qt 6 release series it's less of a big deal, in that by the time a 6.x.y is released commercial-only, usually the next 6.x is already around the corner.