Allegedly, on or about 24 November 2017, David A. De Graaf sent:
I've freshly installed Fedora 27 on two machines; neither have a printer directly connected, but rely on cups-browsed to display the LAN's printers that are attached to, and managed by other (F26) machines.
Not any more. cups-browsed seems to have lost its ability to detect automatically those network printers.
Do you also have the Avahi/zero-conf stuff running? It seems to depend on that nonsense, too, these days.