Greetings!
I have just deployed Bodhi 4.0.0 to production:
https://bodhi.fedoraproject.org/docs/user/release_notes.html
One known issue has been found[0] so far: after creating an update,
your browser will be redirected to a URL that does not exist. The
update was created, however, and you should receive an e-mail with the
URL to it (and can also see it on your user page in Bodhi).
Let me know if you find any other problems!
[0]
https://github.com/fedora-infra/bodhi/issues/3248