We now have nightly rawhide/F-31 composes running.
There's been a couple of image build failures that seem to be spurious
but the ostree/installers are fine, the nightly will run at 08:00 UTC
daily so hopefully they'll settle down.
They can be found here: https://dl.fedoraproject.org/pub/alt/iot/rawhide/
Of course you can also rebase from other releases as per the docs:
Please report any issues to the list here or other locations as appropriate.