After Debian 12 aka bookworm was released yesterday, I've also created new FAI ISO images using Debian 12.
The defaut ISO (large) uses FAI 6.0.3, kernel 6.1 and can install the XFCE and GNOME desktop without internet connection, since all needed packages are included into the ISO. Additional you can install Ubuntu 22.04 or Rocky Linux 9 with this FAI ISO. During these installations, the packages will be downloade via network. There's also the variant FAI ISO UBUNTU, which includes all Ubuntu packages needed for a Ubuntu server or Ubuntu desktop installation.
If you need a small image, you can take the FAI ISO small, which only includes the packages for a XFCE desktop without LibreOffice. This ISO is only 880MB in size.
Currently I'm working on a new feature, so FAI can create Live images, that are bootable. It's like the tool live-build which Debian uses for their official Debian Live images. A first verison of the ISO using the XFCE desktop can be downloaded from
https://fai-project.org/fai-cd
There you also find all other FAI ISOs.