I'm pretty sure he didn't. I believe he said every car in production as of Oct 19th. I'm checking now to verify that.
No matter what he said, use common sense to apply to "cars in production". People are acting as if it's a software command or a few screws that dictate AP1 or AP2.
It's so painfully obvious that
1 - Tesla decided to make all cars after Q3 be AP2.
2 - Stops producing NEW Teslas so the manufacturing lines can be re-tooled for AP2 chassis.
3 - Blow out AP1 cars.