I see this as a positive thing:
RAID management - instead of trying to improve the RAID/disk management on the MD600, the job has now been outsourced to QNAP with a greater range of storage choices and capabilites.
Switching to a PC based control app (Touch:PC) moves some of the hardware product support and development costs onto other companies.
Meridian will still be selling the endpoints to existing and new Sooloos customers and now also Roon customers as well giving a wider base of people that can upgrade to better endpoints and add/upgrade DSP speakers.