I updated to 12.1.1 last night and so far I've noticed some marked improvements in AP for my commute. First, the car handles poorly marked lines much better. During my commute, there is a stretch of the 405S freeway just north of the 101 freeway where, in the carpool lane, the leftmost lines are terrible- Fading, erratic, and hardly visible. AP has always notified me in this area and required that I put my hands on the wheel because AP wasn't sure what was going on with the lane markings. It was evident when the blue lines were dancing like crazy as it tried to figure out what it was seeing why it required me to do this. Well, today with 12.1.1, I got completely past that area and only then did I realize that it didn't ask for any help! I also was feeling asking AP to make lane changes was quicker and more confident and the steering, in general, was smoother and more confident. Keeping my hand on the wheel, it was smooth and accurate. Once AP made it past the poorly painted lane markings without asking for help, I decided that my other observations weren't placebo but actual improvements. I'll report back if it makes it through the poorly painted lane markings again tomorrow and I'll watch to see if the blue lines are dancing...I'll also double check that Cal Trans hasn't improved the markings (yeah, right), but I'm 99% sure by the time I noticed, it was still poorly marked.