Even Franz seemed a bit unsure of their operation right there.
Katie also touched them in the above video to open them. Couple them with this text from the Model S features page:
Depending on how you read that, it could be that they UNLATCH with a simple touch or that they SLIDE OUT with a simple touch... The pricing/options page still says this under tech package though:
Still not definitively saying much... I wonder if they were having issues with the proximity thing so they're slowly backing away? Or maybe in all of the scenarios in the video, the doors can't work as designed since they aren't actually approaching the car, they've either been getting out or standing next to it.