The new Fedora Server KVM disk image is not included in the download options. But is is included in the aarch64 image Checksums. For the x86_64 image, the CHECKSUM file is missing.
Image and checksum for x86_64 are at: https://ftp.fau.de/fedora/linux/releases/37/Server/x86_64/images/
The KVM image for aarch64 is at https://ftp.fau.de/fedora/linux/releases/37/Server/aarch64/images/ along with the raw image for SBCs and Checksum.
Unfortunately, it is just the new feature announced for f37 :-)
Fixed by d349f1f
Metadata Update from @darknao: - Issue close_status updated to: Fixed - Issue status updated to: Closed (was: Open)