Rivian just sent out an app update, latest version now is 1.10.0

It states that we'll need OTA version 2023.02 for the vented seats.

"This app release is all about cool seats, charging details and performance improvements and bug fixes. Please note that your vehicle will need to be updated to 2023.02 to enjoy vented seats.
  • Cool down your seats before you drive on hot days (or cold days if that's your thing).
  • See your charging sessions in more detail —includes charging speed, drive mode and a live energy graph."