Tesla showed an image on Investor Day indicating that they were switching to a hairpin motor design, but I just now remembered that this isn't actually isn't news. In fact, this has been public info for over a year and Tesla has been making hairpin motors in Shanghai since at least 2021 if not earlier.
Remember 12/9? Yes, that's right, 12/9.
The short "Go Giga" teaser
video released on 12/8/2021 featured the hairpin motor.
Hairpin Formation:
Automated hairpin assembly part 1
Automated assembly part 2
Opposite end view of hairpin insertion machine. Clip shows the housing rotating counterclockwise about 5 degrees at a time with the same kind of motion seen in the clip of the actual hairpin insertion.