Since they seem to be slowing down in other form factors this could take the surface Brand farther than the 2-in-1 or Studios alike, because they can upgrade it every year and not even make a dent in other OEMs marketshare, also keeping an eye there so no one fall sleep making lower quality hardware.
Where i fail to understand their logic is looking this side by side with surface book. There's NO way one would need one if you have the other, and the surface book is a greater laptop than the Surface laptop would ever be (except with the Price, the book is way too expensive).