Might be because it's not open yet?? The article I linked to in the first post just said by year-end but no date. That suggests to me that it will probably be closer to end of year, but that's just a guess.
Yeah, I was really hoping for some source or indication of the progress. Or a PreCheck eligible FF who flys through GRR that has a scoop on the progress...I'm probably dreaming & am will have to prepare for a long-ish security line for a Monday departure.
Thanks for your responses