yeah I'd love to have centos as a tag option in the main images. Like we have :latest, :40: 39, it's be nice to do :el10 or whatever so people can just use centos derived images downstream
The Fedora images are being produced, however the F40 image is not regularly built IIRC. There are a few projects building personal Fedora bootc images
I don't think we've been doing any ublue-specific investigation for bootc images, but I've got some personal attempts for KDE and GNOME base images here https://github.com/rsturla/fedora-bootc-base
When I left the repo 3 months ago, they booted into a desktop but had one or two services starting when they shouldn't be.