Just checked out the Surface Pro 4 at the local Best Buy and noticed it's thinner than the Surface Pro 3....enough to make it weigh less....still dunno why people have both a Pro 4 and a Surface 3.....the lighter weight of the Pro 4 further cancels out the need for the Surface 3.....in my opinion anyway. However, apparently form factor means enough for people to spend another $700 on a Surface tablet that does the same thing....but ok, that's fine. 2" shorter means a lot to those people I guess..
