Latest Qt 5.5.x based packages, (generally) based on what is currently in fedora rawhide.
Add repo, update as usual. Packages based on work of fedora kde-sig, http://fedoraproject.org/wiki/SIGs/KDE, please report packaging bugs to http://bugzilla.redhat.com/
This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/dvratil/qt5/