I pretty sure that he is gearing up for a big release soon so PR should improve and they are just working out the last of the bugs, and minor changes like the ramp switches etc to then able to release a complete finished game.
they also went from a standard body to a wide body and reworked the game's art hence the going quiet and delays but it is now looking very nice, big thumbs up for effort.
http://heighwaypinball.com
