Hi,
CUPS upstream changed license of project to Apache license 2.0, which is now incompatible with GPLv2. This change will be in new minor release of CUPS - 2.3.0, which is currently in developing phase (not in Fedora for now). If someone takes code of CUPS and has its project under GPLv2, please change it to GPLv3 (which should be compatible according https://fedoraproject.org/wiki/Licensing:Main?rd=Licensing#SoftwareLicenses ) or try to argument with CUPS developers against this change on their mailing list cups@cups.org .
Is there someone who is influenced by this change?