To me the point of Windows RT was a tablet that could be a laptop when needed (office RT 2013), because it can not run x86, no virus/malware, plus full IE, if I just wanted a tablet (choose your tablet here IPAD/ANDROID/WEBOS/BLACKBERRY etc...) I wanted something different something that was what I thought the Surface RT was a hybrid device, one that is mostly a tablet, with a laptop side to it as well... Really it has replaced my Windows XP Laptop very well... Use it everyday... If I want a full laptop I would have bought one (they are cheaper and can do so much more), after playing with a Encore 7 inch (1G ram, 16SSD w/windows 8.1/bing) I would never touch a cheap Windows tablet again....
Microsoft had something special, although I am not sure if their blog means the end, I can read between the lines...