in the briefing they showed that due to the reduction of the cell padding between the batteries they could fit the existing capacity into a much smaller footprint, however they then said that this would allow the weight to move towards the middle of the car for better handling and also allow for a crumple zone to protect the pack in the event of an accident. So rather than increase range they appear to be looking at increasing performance and safety. One thing that wasn't mentioned is that there's a possibility they can get more power into the batteries as well as get more power out, so you may see faster charging speeds, or at least a different drop off curve.