I have an aging '08 Ford, and the Sync system is quite impressive. It has good bluetooth integration with smartphones, voice control of everything and works quite well even compared to new systems in cars sold today.
But, not long after the early success, they added more infotainment bells and whistles and started having reliability problems with Sync. This is at the time that they were releasing new models that had really good reliability ratings mechanically, but they were getting dinged badly for the Sync problems. I'm surprised it took them this long to move on to a new partner.
I like QNX, but given all the uncertainty about Blackberry's viability, it's surprising that Ford would choose them as the partner.