Do not fret, all! Seriously, there's a ton of work going on in the background. I attended the early September Great River Rail Commission meeting, where a MnDOT representative provided an update on the status of the TCMC! It is happening and there's just a ton of various details to be worked out. The MnDOT employee said, for example, that they hadn't yet signed the service agreement between the three state DOTs. Good news is that Amtrak has apparently already pre-qualified crews for the route, so that's not going to be an issue. The MnDOT rep said that there will be an OFFICIAL announcement about the service starting once all the Ts are crossed and Is dotted, and that service will begin about one month after THAT date.
It's looking like the service won't begin until late 2023/early 2024 at this time, but let's hope they wrap up all the prep work and can make the official announcement in October or early November, in time for service to begin before the bitter end of the year!