A few news: Darktable is going to be removed from Fedora official repositories after Fedora Packaging Committee decision: https://fedorahosted.org/fpc/ticket/550#comment:6
You can still use Darktable by enabling my personal Copr repository: # dnf copr enable germano/darktable # dnf install darktable Fedora should update your existing Darktable without any problem. You can find the two commands also here http://www.darktable.org/install/#fedora