The new FAI version 5.9.4 adds support for the new Ubuntu LTS version 20.04 (focal). New FAI installation images (including a Ubuntu only ISO) are available from

I've added support for the Debian testing release (currently bullseye) to the FAIme service for building customized installation and cloud images. This service still supports the oldstable and stable release including variants with a backports kernel.

The build service is also using the newest FAI version and the customized ISO images can be booted in an UEFI or legacy BIOS environment.