yeah, that's the problem of mint. They don't support dist-upgrade so, when they release a new version, you are supposed to reinstall the full os or try yourself

yeah, that's the problem of mint. They don't support dist-upgrade so, when they release a new version, you are supposed to reinstall the full os or try yourself a dist-upgrade changing manually all the repos and being careful with confilcts (and there will be often). In my opinion that is a nonsense