What is the production status of the Pipistrel Panthera as of March 2017?
I may have more news on that next week from Sun 'n Fun 2017.  Pipistrel will be an exhibitor at the show and may have a Panthera prototype on display.

Currently the Panthera is planned to be released as an experimental kit and may be type certified at some point in the future.

I know the program has suffered some setbacks, including an increase of empty weight by some 200 lbs.  New aircraft development is never fast nor without complications.

The Panthera does look intriguing - 200 KIAS on 10 GPH with good, stable flight characteristics and modern avionics, BRS parachute, etc.  I want to take it for a demo flight when production examples become available.