2020 iPad Pro Includes Microphone Hardware Disconnect Security Feature

Apple has added an anti-eavesdropping feature to the 2020 iPad Pro that ensures the microphone hardware is disabled when a case is attached to the iPad and closed.
The security feature was first introduced in 2018 in MacBook models using Apple's T2 security chip, which includes a hardware microphone disconnect feature that disables the mics when the notebook's lid is closed.
As spotted by 9to5Mac, an updated version of Apple's Platform Security document makes clear that the anti-eavesdropping is