Another data point: just called back and the rep told me it would be available for non-eligible customers at the end of the year, and that he couldn't sell me a manual tonneau cover. I've waited well over two years at this point, what's another couple of months...if it happens.
I have a 2023 177** VIN, not configured with tonneau (because I was told this would be a later option once they'd figured things out).
I called and was told my VIN wasn't compatible, then armed with the information on this thread I called again and asked explicitly about the Mannual Tonneau...