One potentially interesting thing showed up in 16.0.0 (kernel diffs still pending). It relates to a much older piece of info which I don't think I've seen discussed before. I'll just put both the relevant values here, which come from the
audio module in FirmwareDebugSettings:
Name | Versions | Default Values |
---|
builtin_microphone_volume | 10.0.0+ | 0 |
builtin_microphone_analog_boost_gain | 16.0.0+ | 5 |
As you can see, the first of these "built-in microphone" settings was added all the way back in 10.0.0, released in April 2020. The second was just added in 16.0.0.
I can't decide whether the fact that a similar setting existed in 10.0.0 makes the new addition more or less interesting! Personally, I don't see Nintendo adding a microphone or camera to their next hardware, but this is at least an interesting setting to take note of.