The latest date is May 3, 2023, which may be something like the 14th deadline they've had for it since they started it. Now that everyone but American Samoa is compliant though it may finally come to pass.
That explains it. When my parents lived in MT a couple of years ago, they had to come up with another form ID for the "impending" Real ID rule change. I thought it was a thing now, but apparently the "urgent" need for security isn't quite what TSA has told us. Shocking!