GnuPG 2.5.x has been the stable branch for quite some time now and has introduced support for the post-quantum algorithm Kyber (ML-KEM).
The repositories for 2.5.x packages are already available for Debian and Debian-based distributions. They are expected to be added to Fedora and other RPM-based distributions in the coming months.
So the new Kyber algorithm should be added in GpgFronted.
In addition, the Windows builds of GpgFrontend should include GnuPG 2.5.x so users can take advantage of PQC features on Windows as well.