Are these custom matches in Alpha 3.20?

Yes.

The reason we paused is it's coming in literally as we speak. That's why both of us went, "well."

Actively being worked on.

Check's in the mail, but it's not quite that bad.

So the goal is for the custom matches to be a part of Alpha 3.20.

Yeah. We were pushing really, really hard for that. The next update for Arena Commander had to have that back in. We know how much the community wants it. We know how much the devs even want it, for a bunch of different reasons anyways, but being able to set up private matches for the community is imperative. So we want to support it.