I believe there are a number of rationales for going to a larger screen (11.6" perhaps) on the Surface Pro II. These are obviously just my opinion, but I think they make sense: I believe that there is a very good chance the Surface Pro II will have a greater than 1920 x 1080 resolution. This really begs for more space as the zoom issue with external monitors is already a problem. Can you imagine how a 200%+ zoom will look on your 23" monitor just so you can read text on your Surface Pro II? Since it looks like the Surface RT may be headed to an 8" form factor, there is no longer a reason to maintain a homogeneous sizing between the 2 devices as no one really imagines an 8" Surface Pro. One way to add a larger battery while making the Surface Pro thinner would be to make it taller and wider. A larger Surface Pro would make room for onboard pen storage. Since the Surface Pro is primarily aimed at the business user, there is no doubt that more space would be a plus. At 11.6" they can add a bigger keyboard and larger mousepad. I believe that if users had a choice between a 10.6" thicker Surface Pro and an 11.6" thinner Surface Pro they would choose the latter. As far as transportability, there is no difference between carrying a 10.6" and an 11.6" inch device - neither will fit in your pocket. With new screen technology they could make the screen area larger without dramatically increasing the size of the overall device by shrinking the bezel. All of the Surface Pro's competition is offering 11.6 to 13.3" form factors. These guys do research too and there is a reason they have gone for this size to target business users. By the time the Surface Pro II comes out there will be some tough competition already in the marketplace. To appear "new and exciting" Surface Pro will have to offer something more than just better guts. It has to "look" different and an 11.6" inch screen with a thinner profile is one way to do that. I believe the reason MS went with 10.6" inches on the Surface Pro in the first place was so that it would be the same size as the Surface RT. Rather than being a plus this ended up in just confusing the consumer. If you are paying twice as much for something it should look more different than just being slightly thicker. So my final prediction? Surface Pro goes to 11.6" and Surface RT goes to 8".