Hello everyone,

Design team switched to JXL for the Fedora 42 default wallpaper, which may impact some spins. For beta release, it will be nice
for each spin to adopt JXL format as soon as possible. Alternatively, those wishing to keep PNG requires a conversion upstream from 
JXL to PNG[1]. Details is on https://fedoraproject.org/wiki/Changes/SwitchToJXLforDefaultWallpaper

Regards,

Reference:

[1] https://github.com/fedoradesign/backgrounds/issues

-- 
Luya Tshimbalanga
Fedora Design Team
Fedora Design Suite maintainer