I think my reply was clear enough.
Regardless if we'll do an update for our older sceneries to get SODE jetways (we'll likely do it) or you would do it, by using the new GSX Level 2 editing capabilities, it won't required a purchase of the expansion, on FSDT airports.
As I've said, GSX has always been free to use at FSDT airports, and the the expansion doesn't change that.