Timelines and development are never more then wishful thinking. The best thing they did in the latest update was to omit a new target date. It will be done when it is and not a day sooner.
The first deadline was a requirement to get in to Indiegogo. The second was youthful exuberance or wishful thinking. The third was probably succumbing to pressure and then reality kicked in. I would be very surprised if there were any more dates given until they are already set in stone internally.
I've got two more campaigns right now that are also on their 3rd missed delivery date. So it doesn't even phase me any more.
For reference: Kryo Sleep Performance System
and: WeatherFlow Smart Weather Stations