For anyone looking for the update on Steam tonight, it's totally out of my control right now:
Minutes prior, they told me to set up "Authenticator" before the build could go live. Then they say this once I do it. I've messaged support, but from my experience, Steam's support is slow to say the least. It'll probably be live before they actually get to it. The game is already uploaded. The moment I'm allowed to make the build live again, it'll be up.
Hopefully they get back fairly quickly. Sorry for the inconvenience, but it's kind of out of my hands.