I have a Pi4 with 8G of RAM sitting in the corner of my desk gathering dust waiting for a chance to run Fedora/ARM64. Officially it's not supported:

https://fedoraproject.org/wiki/Architectures/ARM/Raspberry_Pi#Supported_Hardware

From time to time I hear rumors of upstream efforts to bring the Pi4 into the supported fold, but not much recently. Can anyone shed any new light on this?

--Doc Savage
    Fairview Heights, IL