Quoted from pkiefert:

It's very rudimentary at the moment as most of the development of the full screen version of the game is slated for the time period between ordering parts for the production build and the start of assembly. Many parts require up to 12 weeks lead time, so that's a full three months of dedicated time on the new code side.
That's not to say that work hasn't been done on that side, just that most of it is scheduled for that time period between ordering parts and shipping. We've done some code on the Sudden Death features (ie: flippers get weaker during your sudden death ball) on the full screen side and worked on some of the service menu mostly.
Paul