These are sold as machine controllers only, not general-purpose PCs. That is Tormach's mentality-- if they are treated as black boxes, then support and upgrades and bug fixes are easy-- They send a CD that wipes everything and installs a whole new OS if they want and users wouldn't notice as long as the G-code and offset tables are preserved. IMO Tormach wants to be more like HAAS and this is how they get there (BTW HAAS controls run on Windows Embedded)

With some work it's possible to install software on the PathPilot (I had to do that for my touch screen), but at that point it's on you if it fails to work properly or gets wiped at the next update, so I doubt there will be a 'pop into the GUI for a minute' button.