This might be important in my line of work. Quicktime is an integral part of a lot of media workflows to this day; but I didn't see this story here yet:
http://arstechnica.com/security/2016/04/apple-stops-patching-quicktime-for-windows-despite-2-active-vulnerabilities/ [arstechnica.com]
Personally I'm smelling the sweet air-gap but a lot of folks probably won't be!