I know this may seems a bit far fetched, but I find it a bit dangerous that they are performing an OTA upgrade that, according to the driver, noticeably changes

I know this may seems a bit far fetched, but I find it a bit dangerous that they are performing an OTA upgrade that, according to the driver, noticeably changes the vehicle behaviour. I do not own a Tesla, so is there a message that tells "Hey ! Your vehicle has been updated, take care".