Fedora 30 Going Through Its Formalities To Ship With & Built By The GCC 9 Compiler
With each new Fedora release you can pretty much be guaranteed it will be using the latest and greatest releases of the GNOME desktop, the most recent stable kernel, and it's also been very punctual in switching over to new major releases of the GCC compiler -- generally being the first of the major Linux distributions adopting the annual major GNU compiler releases. With Fedora 30 due out in May, it should ship with GCC 9.1 as would be standard practice. It's not guaranteed though as FESCo hasn't signed off on it with this change request coming in past the deadline...