alphanumeric said:
Windows RT may have a desktop, but it won't run your traditional desktop programs. The Office shipped on RT devices isn't your traditional desktop version. I personally wouldn't call it that. I do believe its referred to as Office RT. It specially coded to run on Windows RT. Granted it looks like any other desktop version of office, it has the same GUI. It wouldn't surprise me if Microsoft came out with a fully Metro version of Windows RT.
The only difference between the RT "desktop" and the non-RT desktop is that the applications are compiled for the ARM processor. It's identical to Office in all other ways.

So yes, it is a traditional desktop. But no, it can't run traditional desktop programs because those programs don't run on an ARM CPU.