I just got 2019 12.1.1 today. Its got some interesting features. My S is a 2/17 built AP 2.0. 12.1.1 enabled Sentry Mode in mine. You can turn it on with the app. It also includes autosteer stop-light warning, to let you know before you might run a red light.
To me, the amazing part is that everything that I have read before today was that AP 2. cars would not get Sentry Mode.