Is there a way of uploading a build (first time, creating a new channel) without it immediately publishing?

E.g. can I start an upload using butler that will create a channel/download that starts out hidden? If that's not a feature that exists, it would be a good one to have in future.

EDIT: I found how to change the project publish date and how to set files to be pre-orders, via the site. It would still be cool to be able to set a publish date per download/channel (or to be able to upload a hidden thing) via butler.

Thanks!

You can mark a channel as hidden after it has been created from the edit project page. Currently no way to do that from butler directly, but I think that would be a good idea.

how did you change the publish date?