https://bugzilla.redhat.com/show_bug.cgi?id=1694231
--- Comment #4 from Robert-André Mauchin zebob.m@gmail.com --- It's documented here:
https://fedoraproject.org/wiki/Updates_Policy#Rawhide_.2F_devel_.2F_master
"When a proposed update contains an ABI or API change: notify a week in advance both fedora-devel and maintainers directly (using the packagename-owner@ alias) whose packages depend on yours to rebuild or offer to do these rebuilds for them."