Tesla has just released their Full Self-Driving 12.5.5 with software update 2024.32.20 on the Cybertruck to the first batch of company employees and members of the early access program. It includes vision-based attention monitoring with sunglasses, as well as an end-to-end highway stack.
Improvements you can expect in the next update include earlier, more natural lane change decisions, improved performance in parking lots, better performance at intersections / stops, as well as the introduction of Speed Profile. Since this is an early access build, it expects the driver and anyone they authorize to use additional caution and remain attentive. One thing to keep in mind is that FSD does not make your vehicle autonomous.
