Disagree that because it was not on a particular date order form that it was not available. After all, order forms printed for '69 Firebirds built in '68 and early '69 did not offer T/A package, yet there were certainly '69 T/As...or did the lack of that available option on an early sheet make T/A a myth too?
If you apply this logic to the question here then the option would show up for 1969 for Firebirds. It doesn't. Therefore it wasn't a late 68 option like the Trans Am option was a late 69 option.
