Hey! Due to some major changes in the provisioning from Ubuntu 20.04.3 on, you’re currently not able to deploy hosts with newer versions (20.10, 22.04) as usual. We’re working on implementing the new so-called Ubuntu autoinstall which replaces the existing debian-installer. This takes some time and requires re-writing of the existing provisioning templates.
Some people got the provisioning working already even though you have to perform a couple of manual steps to get the hosts deployed - see here.
I hope this helps/answers your question.