When did you hear that? I was told a bit over a year ago that the differences were: the Red, some badging, early deliveries, and would have to take all options - but what the options would be wasn't well known. That's it. As Sig Roadsters didn't have special options, no-one I spoke to at Tesla thought Sig Model S would have special options.
Tesla has and is making mistakes, but in my view they are very open as to what's going on. That they're now thinking of changing things like the Lacewood is, IMHO, a good thing. It means they're listening to the feedback they're getting. With most car companies, changes wouldn't happen until the next model year - these are happening before the first car is delivered.
In retrospect, Tesla should have done a better job of warning Sig holders what they were getting themselves into.
Model X signature reservation holders should take note.