Regarding the AppX thing... Actually AppX packaged apps (even from the Store in AppContainer) have always had direct filesystem access, but only from their inst

Regarding the AppX thing... Actually AppX packaged apps (even from the Store in AppContainer) have always had direct filesystem access, but only from their install directory and to/from their AppData directories. It's only access outside those areas which requires use of the picker and/or library capabilities (which both go through a broker process). They can also of course load DLLs, and there are APIs for moving your app Windows around (with some limitations). That said, I do not know exactly what they're doing here, and it may be using some new capabilities being added to the system in the rs1 release.