I think Microsoft may have a winner on their hands for a change.
The keyboard doubles as the cover and looks significantly lighter and thinner than e.g. the Asus Transformer's detachable keyboard. The magnetically-attachable keyboard is exactly
what I have been wanting on a tablet, and, with this, the Surface blurrs the line between tablets and ultrabooks (a.k.a. ultra laptops).
I also like the fact that two different interchangeable keyboard models are available, Touch Cover and Type Cover:http://www.youtube.com/watch?v=2vasc8UNl_0
I wonder if can run Plasma Active?