Sadly, nothing new to report on this endeavour as of late. The last update we received was the March 8, 2016 webinar outlining the "High Level PB Roadmap". FYI: PB Vision and Roadmap Webcasts
What I would suggest - if you haven't already done so - is to register with Appeon & also review that presentation. That should give you a good idea where Appeon wants to take PB over the next 5 years. Registering, will also give you a front row seat to any new PB information released by Appeon as soon as they can.
Regards ... Chris