FSD Beta v12.3.1 Release Notes
New Feature
for Model S, 3, X and Y

FSD Beta v12 upgrades the city-streets driving stack to a single end-to-end neural network trained on millions of video clips, replacing over 300k lines of explicit C++ code.
Single Pull in FSD Beta
New Feature
for Model S, 3, X and Y

When you enable Full Self-Driving (Beta), your vehicle will use the Single Pull setting by default. This means that you’ll turn on Autopilot when you pull the drive stalk down once.
Traffic-Aware Cruise Control won’t be available unless you choose it in your vehicle settings at Autopilot > Traffic-Aware Cruise Control. Doing so will disable Full Self-Driving (Beta).