In the near term, I would imagine not many changes, but some improvements. Not sure the technology for the an improved solar panel is in the works. It adds more weight than range. The solar panel works well for its intended use. Lighter rims would save on weight, and may get closer to the 350 miles over all.
An improvement in Battery range would be more desirable. Oddly, there was a desire to have the VW diesel 2.0 turbo in place of the GM ICE for more generator torque, at a lower rpm. Glad that didn't happen.
In the near term, Kama will be better, but similar. Karma Automotive will have to step and catch up for the two years of lost to technology.