Just got my third set of Index controllers. Looks like there's still no updated hardware:

Old left: rev 14.1.9 lot 2019/7/25
New left: rev 14.1.9 lot 2020/1/7

Old right: rev 14.0.9 lot 2019/7/26
New right: rev 14.0.9 lot 2020/1/10