Received FSD V 12.3.2.1 on my 2024 Model S LR on March 28.

The main improvement in this version was the right and left turning getting too close to the curbs. This was perfect. Not one failure or needing to abort to avoid collision with tires against the curb. There were a couple edge case failures and still a couple bugs in this version but overall it made for a very comfortable drive.

The Model S has a different display system than the Model Y so it required a second camera and I had some technical problems with screen glare and battery life in that camera I discovered during the test drive. I will be working to fix that in future videos.

The video recording was longer but I edited out portions where I was sitting at a traffic light. I kept in every failure during the drive and even my own mistakes such as accidentally aborting FSD when the car did nothing wrong. At no time during the test did I feel uncomfortable with how this version drove the car. There was one incident of FSD making a left turn in front of a speeding truck that I had to take control and step on it to get out of the way. Acceleration was much smoother and natural. It actually was a little slower leaving from a stop sign when there was no traffic except impatient drivers tailgating me.